NetBeans 7.0.1清理和生成清单错误

我正在为我的类做一个项目，我需要创建一个.jar文件以便可以分发它。但是，当我单击“清理并生成”时，它会给我一个错误：

init:
deps-clean:
Updating property file: /Users/User/Desktop/School/Grade 11 (14 - 15)/Semester 1/01_ICS3UV/Unit 4/Programs/DevonDeruchie-ICS3UV/DevonDeruchie-G9Integer/build/built-clean.properties
Deleting directory /Users/User/Desktop/School/Grade 11 (14 - 15)/Semester 1/01_ICS3UV/Unit 4/Programs/DevonDeruchie-ICS3UV/DevonDeruchie-G9Integer/build
clean:
init:
deps-jar:
Created dir: /Users/User/Desktop/School/Grade 11 (14 - 15)/Semester 1/01_ICS3UV/Unit 4/Programs/DevonDeruchie-ICS3UV/DevonDeruchie-G9Integer/build
Updating property file: /Users/User/Desktop/School/Grade 11 (14 - 15)/Semester 1/01_ICS3UV/Unit 4/Programs/DevonDeruchie-ICS3UV/DevonDeruchie-G9Integer/build/built-jar.properties
Created dir: /Users/User/Desktop/School/Grade 11 (14 - 15)/Semester 1/01_ICS3UV/Unit 4/Programs/DevonDeruchie-ICS3UV/DevonDeruchie-G9Integer/build/classes
Created dir: /Users/User/Desktop/School/Grade 11 (14 - 15)/Semester 1/01_ICS3UV/Unit 4/Programs/DevonDeruchie-ICS3UV/DevonDeruchie-G9Integer/build/empty
Compiling 14 source files to /Users/User/Desktop/School/Grade 11 (14 - 15)/Semester 1/01_ICS3UV/Unit 4/Programs/DevonDeruchie-ICS3UV/DevonDeruchie-G9Integer/build/classes
Note: /Users/User/Desktop/School/Grade 11 (14 - 15)/Semester 1/01_ICS3UV/Unit 4/Programs/DevonDeruchie-ICS3UV/DevonDeruchie-G9Integer/src/zzTeacherGUIPackage/TeacherLockGUI.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: /Users/User/Desktop/School/Grade 11 (14 - 15)/Semester 1/01_ICS3UV/Unit 4/Programs/DevonDeruchie-ICS3UV/DevonDeruchie-G9Integer/src/zzTeacherGUIPackage/MarksAppGUI.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Copying 1 file to /Users/User/Desktop/School/Grade 11 (14 - 15)/Semester 1/01_ICS3UV/Unit 4/Programs/DevonDeruchie-ICS3UV/DevonDeruchie-G9Integer/build/classes
compile:
Created dir: /Users/User/Desktop/School/Grade 11 (14 - 15)/Semester 1/01_ICS3UV/Unit 4/Programs/DevonDeruchie-ICS3UV/DevonDeruchie-G9Integer/dist
Copying 1 file to /Users/User/Desktop/School/Grade 11 (14 - 15)/Semester 1/01_ICS3UV/Unit 4/Programs/DevonDeruchie-ICS3UV/DevonDeruchie-G9Integer/build
/Users/User/Desktop/School/Grade 11 (14 - 15)/Semester 1/01_ICS3UV/Unit 4/Programs/DevonDeruchie-ICS3UV/DevonDeruchie-G9Integer/nbproject/build-impl.xml:676: Existing manifest /Use  rs/User/Desktop/School/Grade 11 (14 - 15)/Semester 1/01_ICS3UV/Unit 4/Programs/DevonDeruchie-ICS3UV/DevonDeruchie-G9Integer/build/null1454207832 is invalid
BUILD FAILED (total time: 5 seconds)

---

我不知道这意味着什么，也不知道如何修复它。。。请帮帮我。另外，我可以补充一点，我在netbeans中创建了一个时钟，清理和构建过程进行得非常完美，但这总是会产生错误。另外，可能是因为我从笔记本电脑切换到MacBook Pro吗？

在查看了第676行的build-impl.xml文件后，我进一步阅读了错误代码，其中提到了nullxxx文件（这是清单：）。我编辑了清单以添加一个启动屏幕，但忘记了它。我添加的代码放错了地方。它本该在中间的时候却在底部！希望这篇文章能对其他人有同样的帮助。

这说明它不喜欢build-impl.xml文件第676行的内容，所以从这里开始，确保xml是有效的。对于xml文件，错误中的行号可能有点误导，因为它可能只是表示在其他地方没有正确使用结束标记等。我查看了build-impl.xml文件，在第676行它打开了一个清单标记。我记得有个错误，说了一些关于无效清单的事情，你怎么看？谢谢你的回复。