什么是'；无法完成安装，因为存在冲突的依赖项'；在安装eclipse插件时是什么意思？

我正在尝试在eclipse中安装egit插件。我得到以下错误：

Cannot complete the install because of a conflicting dependency.
  Software being installed: Eclipse Git Team Provider 3.4.1.201406201815-r (org.eclipse.egit.feature.group 3.4.1.201406201815-r)
  Software currently installed: Eclipse IDE for Java EE Developers 1.4.2.20120213-0813 (epp.package.jee 1.4.2.20120213-0813)
  Only one of the following can be installed at once: 
    Team Support UI 3.6.201.v20130125-135424 (org.eclipse.team.ui 3.6.201.v20130125-135424)
    Team Support UI 3.6.101.R37x_v20111109-0800 (org.eclipse.team.ui 3.6.101.R37x_v20111109-0800)
    Team Support UI 3.6.100.I20110525-0800 (org.eclipse.team.ui 3.6.100.I20110525-0800)
  Cannot satisfy dependency:
    From: Eclipse IDE for Java EE Developers 1.4.2.20120213-0813 (epp.package.jee 1.4.2.20120213-0813)
    To: org.eclipse.epp.package.jee.feature.feature.group [1.4.2.20120213-0813]
  Cannot satisfy dependency:
    From: Eclipse Git Team Provider 3.4.1.201406201815-r (org.eclipse.egit.feature.group 3.4.1.201406201815-r)
    To: org.eclipse.egit.ui [3.4.1.201406201815-r]
  Cannot satisfy dependency:
    From: Git Team Provider UI 3.4.1.201406201815-r (org.eclipse.egit.ui 3.4.1.201406201815-r)
    To: bundle org.eclipse.team.ui [3.6.200,4.0.0)
  Cannot satisfy dependency:
    From: Java EE IDE Feature 1.4.2.20120213-0813 (org.eclipse.epp.package.jee.feature.feature.group 1.4.2.20120213-0813)
    To: org.eclipse.platform.feature.group [3.7.2.v20120207-1839-9gF7UHPDFxGjd-PqDr2jX_4yKaumkoHTz04_q-q]
  Cannot satisfy dependency:
    From: Eclipse Platform 3.7.2.v20120207-1839-9gF7UHPDFxGjd-PqDr2jX_4yKaumkoHTz04_q-q (org.eclipse.platform.feature.group 3.7.2.v20120207-1839-9gF7UHPDFxGjd-PqDr2jX_4yKaumkoHTz04_q-q)
    To: org.eclipse.team.ui [3.6.101.R37x_v20111109-0800]

我正在ubuntu 13.04上使用EclipseIndigo。

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如何解决此问题？

您正在尝试在Indigo EE上安装最新的EGit。这不受支持，因为最新的EGit需要比Indigo中更新的团队提供程序

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尝试从Indigo更新站点（）安装EGit或升级Eclipse。

您正在尝试在Indigo EE上安装最新的EGit。这不受支持，因为最新的EGit需要比Indigo中更新的团队提供程序

---

尝试从Indigo更新站点（）安装EGit或升级Eclipse。

您正在尝试在Indigo EE上安装最新的EGit。这不受支持，因为最新的EGit需要比Indigo中更新的团队提供程序

---

尝试从Indigo更新站点（）安装EGit或升级Eclipse。

您正在尝试在Indigo EE上安装最新的EGit。这不受支持，因为最新的EGit需要比Indigo中更新的团队提供程序

尝试从Indigo更新站点（）安装EGit或升级Eclipse