“错误”；未能创建零件'；“安全控制”；在EclipseNeon4.6中使用Scala2.11？

我下载了面向Java开发人员的EclipseIDE，以及它的macOS版本，以便将其用于需要Scala2.11和更旧版本的SBT的ApacheSpark课程。不幸的是，较旧的Eclipse Neon版本导致较旧的Scala IDE版本2.11出现错误：

未能创建零件的控件

.metadata/.log文件

！SESSION 2017-09-02 12:11:58.881-----------------------------------------------
eclipse.buildId=4.6.3.M20170301-0400
java.version=1.8.0_131
java.vendor=Oracle公司
引导加载程序常量：OS=macosx，ARCH=x86_64，WS=cocoa，NL=en_US
框架参数：-product org.eclipse.epp.package.java.product-keyring/Users/hhh/.eclipse\u keyring
命令行参数：-os macosx-ws cocoa-arch x86\u 64-product org.eclipse.epp.package.java.product-keyring/Users/hhh/.eclipse\u keyring
!条目org.eclipse.core.net 10 2017-09-02 12:12:38.118
!外部源已将消息系统属性http.nonProxyHosts设置为local |*.local | 169.254/16 |*.169.254/16。将使用首选项中的值覆盖此值
!条目org.eclipse.equinox.p2.metadata 1 0 2017-09-02 12:13:40.239
!消息没有翻译源不可用。将使用默认语言。
!会议2017-09-02 12:20:46.970-----------------------------------------------
eclipse.buildId=4.6.3.M20170301-0400
java.version=1.8.0_131
java.vendor=Oracle公司
引导加载程序常量：OS=macosx，ARCH=x86_64，WS=cocoa，NL=en_US
!条目org.eclipse.osgi 4 0 2017-09-02 12:20:47.510
!加载钩子时出错：org.eclipse.equinox.weaving.hooks.WeavingHook
!堆栈0
java.lang.NoClassDefFoundError:org/eclipse/osgi/baseAdapter/HookConfigurator
位于java.lang.ClassLoader.defineClass1（本机方法）
位于java.lang.ClassLoader.defineClass（ClassLoader.java:763）
位于java.security.SecureClassLoader.defineClass（SecureClassLoader.java:142）
位于java.net.URLClassLoader.defineClass（URLClassLoader.java:467）
在java.net.URLClassLoader.access$100（URLClassLoader.java:73）
在java.net.URLClassLoader$1.run（URLClassLoader.java:368）
在java.net.URLClassLoader$1.run（URLClassLoader.java:362）
位于java.security.AccessController.doPrivileged（本机方法）
位于java.net.URLClassLoader.findClass（URLClassLoader.java:361）
位于java.lang.ClassLoader.loadClass（ClassLoader.java:424）
位于java.lang.ClassLoader.loadClass（ClassLoader.java:357）
位于java.lang.ClassLoader.defineClass1（本机方法）
位于java.lang.ClassLoader.defineClass（ClassLoader.java:763）
位于java.security.SecureClassLoader.defineClass（SecureClassLoader.java:142）
位于java.net.URLClassLoader.defineClass（URLClassLoader.java:467）
在java.net.URLClassLoader.access$100（URLClassLoader.java:73）
在java.net.URLClassLoader$1.run（URLClassLoader.java:368）
在java.net.URLClassLoader$1.run（URLClassLoader.java:362）
位于java.security.AccessController.doPrivileged（本机方法）
位于java.net.URLClassLoader.findClass（URLClassLoader.java:361）
位于java.lang.ClassLoader.loadClass（ClassLoader.java:424）
位于java.lang.ClassLoader.loadClass（ClassLoader.java:357）
位于java.lang.Class.forName0（本机方法）
位于java.lang.Class.forName（Class.java:264）
位于org.eclipse.osgi.internal.hookregistry.hookregistry.loadConfigurators（hookregistry.java:185）
位于org.eclipse.osgi.internal.hookregistry.hookregistry.initialize（hookregistry.java:106）
位于org.eclipse.osgi.internal.framework.EquinoxContainer.（EquinoxContainer.java:64）
在org.eclipse.osgi.launch.Equinox上（Equinox.java:31）
位于org.eclipse.core.runtime.adapter.EclipseStarter.startup（EclipseStarter.java:303）
位于org.eclipse.core.runtime.adapter.EclipseStarter.run（EclipseStarter.java:239）
在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）处
位于sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62）
在sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）中
位于java.lang.reflect.Method.invoke（Method.java:498）
位于org.eclipse.equinox.launcher.Main.invokeFramework（Main.java:673）
位于org.eclipse.equinox.launcher.Main.basicRun（Main.java:610）
位于org.eclipse.equinox.launcher.Main.run（Main.java:1519）
原因：java.lang.ClassNotFoundException:org.eclipse.osgi.baseAdapter.HookConfigurator
位于java.net.URLClassLoader.findClass（URLClassLoader.java:381）
位于java.lang.ClassLoader.loadClass（ClassLoader.java:424）
位于java.lang.ClassLoader.loadClass（ClassLoader.java:357）
... 37多
!条目org.eclipse.core.net 10 2017-09-02 12:20:57.304
!外部源已将消息系统属性http.nonProxyHosts设置为local |*.local | 169.254/16 |*.169.254/16。将使用首选项中的值覆盖此值
!条目org.eclipse.ui 4 0 2017-09-02 12:21:20.184
!消息未处理的事件循环异常
!堆栈0
org.eclipse.swt.SWTException:未能执行runnable（java.lang.NoClassDefFoundError:org/eclipse/osgi/framework/internal/core/FrameworkProperties）
位于org.eclipse.swt.swt.error（swt.java:4533）
位于org.eclipse.swt.swt.error（swt.java:4448）
在org.eclipse.swt.widgets.Synchronizer.runAsyncMessages（Synchronizer.java:185）上
在org.eclipse.swt.widgets.Display.runAsyncMessages（Display.java:4032）上
在org.eclipse.swt.widgets.Display.readAndDispatch（Display.java:3708）上
位于org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run（PartRenderingEngine.java:1121）
位于org.eclipse.core.databinding.observable.Realm.runWithDefault（Realm.java:336）
位于org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run（PartRenderingEngine.java:1022）
位于org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI（E4Workbench.java:150）
位于org.eclipse.ui.internal.Workbench$5.run（Workbench.java:693）
位于org.eclipse.core.databinding.observable.Realm.runWithDefault（Realm.java:336）
在org.eclipse.ui.internal.Workben
!SESSION 2017-09-02 12:11:58.881 -----------------------------------------------
eclipse.buildId=4.6.3.M20170301-0400
java.version=1.8.0_131
java.vendor=Oracle Corporation
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=en_US
Framework arguments:  -product org.eclipse.epp.package.java.product -keyring /Users/hhh/.eclipse_keyring
Command-line arguments:  -os macosx -ws cocoa -arch x86_64 -product org.eclipse.epp.package.java.product -keyring /Users/hhh/.eclipse_keyring

!ENTRY org.eclipse.core.net 1 0 2017-09-02 12:12:38.118
!MESSAGE System property http.nonProxyHosts has been set to local|*.local|169.254/16|*.169.254/16 by an external source. This value will be overwritten using the values from the preferences

!ENTRY org.eclipse.equinox.p2.metadata 1 0 2017-09-02 12:13:40.239
!MESSAGE No translation source unavailable. Default language will be used.
!SESSION 2017-09-02 12:20:46.970 -----------------------------------------------
eclipse.buildId=4.6.3.M20170301-0400
java.version=1.8.0_131
java.vendor=Oracle Corporation
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=en_US

!ENTRY org.eclipse.osgi 4 0 2017-09-02 12:20:47.510
!MESSAGE error loading hook: org.eclipse.equinox.weaving.hooks.WeavingHook
!STACK 0
java.lang.NoClassDefFoundError: org/eclipse/osgi/baseadaptor/HookConfigurator
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:264)
    at org.eclipse.osgi.internal.hookregistry.HookRegistry.loadConfigurators(HookRegistry.java:185)
    at org.eclipse.osgi.internal.hookregistry.HookRegistry.initialize(HookRegistry.java:106)
    at org.eclipse.osgi.internal.framework.EquinoxContainer.<init>(EquinoxContainer.java:64)
    at org.eclipse.osgi.launch.Equinox.<init>(Equinox.java:31)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.startup(EclipseStarter.java:303)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:239)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1519)
Caused by: java.lang.ClassNotFoundException: org.eclipse.osgi.baseadaptor.HookConfigurator
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 37 more

!ENTRY org.eclipse.core.net 1 0 2017-09-02 12:20:57.304
!MESSAGE System property http.nonProxyHosts has been set to local|*.local|169.254/16|*.169.254/16 by an external source. This value will be overwritten using the values from the preferences

!ENTRY org.eclipse.ui 4 0 2017-09-02 12:21:20.184
!MESSAGE Unhandled event loop exception
!STACK 0
org.eclipse.swt.SWTException: Failed to execute runnable (java.lang.NoClassDefFoundError: org/eclipse/osgi/framework/internal/core/FrameworkProperties)
    at org.eclipse.swt.SWT.error(SWT.java:4533)
    at org.eclipse.swt.SWT.error(SWT.java:4448)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4032)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3708)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:693)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:610)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1519)
Caused by: java.lang.NoClassDefFoundError: org/eclipse/osgi/framework/internal/core/FrameworkProperties
    at scala.tools.eclipse.contribution.weaving.jdt.configuration.WeavingStateConfigurer.getConfigArea(WeavingStateConfigurer.java:393)
    at scala.tools.eclipse.contribution.weaving.jdt.configuration.WeavingStateConfigurer.currentConfigStateIsWeaving(WeavingStateConfigurer.java:400)
    at scala.tools.eclipse.contribution.weaving.jdt.configuration.WeavingStateConfigurer.changeWeavingState(WeavingStateConfigurer.java:92)
    at scala.tools.eclipse.diagnostic.StartupDiagnostics$.scala$tools$eclipse$diagnostic$StartupDiagnostics$$ensureWeavingIsEnabled(StartupDiagnostics.scala:67)
    at scala.tools.eclipse.diagnostic.StartupDiagnostics$$anonfun$run$1.apply$mcV$sp(StartupDiagnostics.scala:53)
    at scala.tools.eclipse.ui.DisplayThread$$anon$1.run(DisplayThread.scala:10)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:182)
    ... 23 more
Caused by: java.lang.ClassNotFoundException: org.eclipse.osgi.framework.internal.core.FrameworkProperties cannot be found by org.scala-ide.sdt.aspects_3.0.4.v-2_11-201407232043-c46f499
    at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:461)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:372)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:364)
    at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:161)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 31 more

!ENTRY org.scala-ide.sdt.core 4 0 2017-09-02 12:23:13.724
!MESSAGE Java Model Exception: Java Model Status [helloworld$ [in [Working copy] helloworld.scala [in hello [in src [in hello]]]] does not exist]

!ENTRY org.eclipse.e4.ui.workbench 4 0 2017-09-02 12:23:14.958
!MESSAGE 
!STACK 0
java.lang.ClassCastException: org.eclipse.jdt.internal.core.CompilationUnit cannot be cast to scala.tools.eclipse.InteractiveCompilationUnit
    at scala.tools.eclipse.ScalaCompilationUnitEditor$class.getInteractiveCompilationUnit(ScalaCompilationUnitEditor.scala:84)
    at scala.tools.eclipse.ScalaSourceFileEditor.getInteractiveCompilationUnit(ScalaSourceFileEditor.scala:68)
    at scala.tools.eclipse.ScalaSourceFileEditor.createPartControl(ScalaSourceFileEditor.scala:297)
    at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.createPartControl(CompatibilityPart.java:150)
    at org.eclipse.ui.internal.e4.compatibility.CompatibilityEditor.createPartControl(CompatibilityEditor.java:99)
    at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create(CompatibilityPart.java:340)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:55)
    at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:966)
    at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:931)
    at org.eclipse.e4.core.internal.di.InjectorImpl.inject(InjectorImpl.java:151)
    at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:375)
    at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:294)
    at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:162)
    at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java:105)
    at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java:74)
    at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java:56)
    at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(ContributedPartRenderer.java:129)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:975)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:651)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:757)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$0(PartRenderingEngine.java:728)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:722)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:706)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl$1.handleEvent(PartServiceImpl.java:104)
    at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:40)
    at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:233)
    at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:145)
    at org.eclipse.swt.widgets.Display.syncExec(Display.java:4814)
    at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:211)
    at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:36)
    at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:201)
    at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197)
    at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
    at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
    at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
    at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:135)
    at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:78)
    at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:39)
    at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:94)
    at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:60)
    at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:374)
    at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl.setSelectedElement(ElementContainerImpl.java:173)
    at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.showElementInWindow(ModelServiceImpl.java:617)
    at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.bringToTop(ModelServiceImpl.java:581)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.delegateBringToTop(PartServiceImpl.java:770)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.bringToTop(PartServiceImpl.java:401)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:1214)
    at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:3261)
    at org.eclipse.ui.internal.WorkbenchPage.access$25(WorkbenchPage.java:3176)
    at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:3158)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3153)
    at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3117)
    at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3107)
    at org.eclipse.ui.ide.IDE.openEditor(IDE.java:563)
    at org.eclipse.ui.ide.IDE.openEditor(IDE.java:518)
    at org.eclipse.jdt.internal.ui.wizards.NewElementWizard$1.run(NewElementWizard.java:70)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:182)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4032)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3708)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:693)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:610)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1519)

!ENTRY org.eclipse.e4.ui.workbench 4 2 2017-09-02 12:23:15.155
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.e4.ui.workbench".
!STACK 0
java.lang.ClassCastException: org.eclipse.ui.internal.ErrorEditorPart cannot be cast to org.eclipse.ui.texteditor.ITextEditor
    at scala.tools.eclipse.actions.ScalaCompilationUnitEditorActionContributor.setActiveEditor(ScalaCompilationUnitEditorActionContributor.scala:12)
    at org.eclipse.ui.internal.EditorActionBars.partChanged(EditorActionBars.java:341)
    at org.eclipse.ui.internal.WorkbenchPage.updateActivations(WorkbenchPage.java:309)
    at org.eclipse.ui.internal.WorkbenchPage.access$18(WorkbenchPage.java:291)
    at org.eclipse.ui.internal.WorkbenchPage$E4PartListener.partActivated(WorkbenchPage.java:209)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl$3.run(PartServiceImpl.java:250)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.firePartActivated(PartServiceImpl.java:247)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.activate(PartServiceImpl.java:757)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.activate(PartServiceImpl.java:682)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.activate(PartServiceImpl.java:677)
    at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:3269)
    at org.eclipse.ui.internal.WorkbenchPage.access$25(WorkbenchPage.java:3176)
    at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:3158)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3153)
    at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3117)
    at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3107)
    at org.eclipse.ui.ide.IDE.openEditor(IDE.java:563)
    at org.eclipse.ui.ide.IDE.openEditor(IDE.java:518)
    at org.eclipse.jdt.internal.ui.wizards.NewElementWizard$1.run(NewElementWizard.java:70)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:182)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4032)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3708)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:693)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:610)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1519)

!ENTRY org.eclipse.e4.ui.workbench 4 0 2017-09-02 12:23:15.156
!MESSAGE An exception occurred while notifying part listeners
!STACK 0
java.lang.ClassCastException: org.eclipse.ui.internal.ErrorEditorPart cannot be cast to org.eclipse.ui.texteditor.ITextEditor
    at scala.tools.eclipse.actions.ScalaCompilationUnitEditorActionContributor.setActiveEditor(ScalaCompilationUnitEditorActionContributor.scala:12)
    at org.eclipse.ui.internal.EditorActionBars.partChanged(EditorActionBars.java:341)
    at org.eclipse.ui.internal.WorkbenchPage.updateActivations(WorkbenchPage.java:309)
    at org.eclipse.ui.internal.WorkbenchPage.access$18(WorkbenchPage.java:291)
    at org.eclipse.ui.internal.WorkbenchPage$E4PartListener.partActivated(WorkbenchPage.java:209)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl$3.run(PartServiceImpl.java:250)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.firePartActivated(PartServiceImpl.java:247)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.activate(PartServiceImpl.java:757)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.activate(PartServiceImpl.java:682)
    at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.activate(PartServiceImpl.java:677)
    at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:3269)
    at org.eclipse.ui.internal.WorkbenchPage.access$25(WorkbenchPage.java:3176)
    at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:3158)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3153)
    at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3117)
    at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3107)
    at org.eclipse.ui.ide.IDE.openEditor(IDE.java:563)
    at org.eclipse.ui.ide.IDE.openEditor(IDE.java:518)
    at org.eclipse.jdt.internal.ui.wizards.NewElementWizard$1.run(NewElementWizard.java:70)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:182)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4032)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3708)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:693)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:610)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1519)

!ENTRY org.scala-ide.sdt.core 4 0 2017-09-02 12:26:22.901
!MESSAGE Java Model Exception: Java Model Status [hellotest$ [in [Working copy] hellotest.scala [in hello [in src [in hello]]]] does not exist]

!ENTRY org.eclipse.e4.ui.workbench 4 0 2017-09-02 12:26:23.272
!MESSAGE 
!STACK 0
java.lang.ClassCastException: org.eclipse.jdt.internal.core.CompilationUnit cannot be cast to scala.tools.eclipse.InteractiveCompilationUnit
    at scala.tools.eclipse.ScalaCompilationUnitEditor$class.getInteractiveCompilationUnit(ScalaCompilationUnitEditor.scala:84)
    at scala.tools.eclipse.ScalaSourceFileEditor.getInteractiveCompilationUnit(ScalaSourceFileEditor.scala:68)
    at scala.tools.eclipse.ScalaSourceFileEditor.createPartControl(ScalaSourceFileEditor.scala:297)
    at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.createPartControl(CompatibilityPart.java:150)
    at org.eclipse.ui.internal.e4.compatibility.CompatibilityEditor.createPartControl(CompatibilityEditor.java:99)
    at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create(CompatibilityPart.java:340)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:55)