Eclipse安装JGit插件时安不上，错误提示在下面，请问该这么解决？

Cannot complete the install because one or more required items could not be found.
Software being installed: Eclipse EGit Mylyn GitHub Feature 1.0.0.201106220257-r (org.eclipse.mylyn.github.feature.feature.group 1.0.0.201106220257-r)
Missing requirement: Apache HttpClient OSGi bundle 4.1.0.v201103311320 (org.apache.httpcomponents.httpclient 4.1.0.v201103311320) requires 'package org.apache.commons.logging 1.1.1' but it could not be found
Cannot satisfy dependency:
From: EGit GitHub API Core 1.0.0.201106220257-r (org.eclipse.egit.github.core 1.0.0.201106220257-r)
To: package org.apache.http.auth [4.1.0,5.0.0)
Cannot satisfy dependency:
From: Mylyn GitHub Connector Core 1.0.0.201106220257-r (org.eclipse.mylyn.github.core 1.0.0.201106220257-r)
To: package org.eclipse.egit.github.core [1.0.0,1.1.0)
Cannot satisfy dependency:
From: Eclipse EGit Mylyn GitHub Feature 1.0.0.201106220257-r (org.eclipse.mylyn.github.feature.feature.group 1.0.0.201106220257-r)
To: org.eclipse.mylyn.github.core [1.0.0.201106220257-r]

你是离线安装的吧，离线安装不容易装上，缺东西。还是在线装把，或者解压出来放到eclipse里也行。egit是3.7新功能，我在线装就能装上。