我在尝试通过 Eclipse Indigo 安装 GWT Designer 时遇到以下错误 ->安装新软件
进度达到 37%，然后终止并出现以下错误：
An error occurred while collecting items to be installed
session context was:(profile=epp.package.jee, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
Unable to read repository at http://dl.google.com/eclipse/inst/d2gwt/latest/3.7/plugins/com.google.gdt.eclipse.designer.doc.user_2.4.2.r37x201110181249.jar.
Read timed out
Unable to read repository at http://dl.google.com/eclipse/inst/d2gwt/latest/3.7/plugins/org.eclipse.wb.doc.user_1.2.0.r37x201109270322.jar.
GWT、GAE SDK 和插件已成功安装。 （并且也在运行）
我从以下位置下载了 JAR 文件：
http://dl.google.com/eclipse/inst/d2gwt/latest/3.7/plugins/com.google.gdt.eclipse.designer.doc.user_2.4.2.r37x201110181249.jar
现在我该在哪里添加这个扩展？
I got the following error while trying to install GWT Designer via Eclipse Indigo -> Install new software
Progress was made upto 37% and then it terminatedw with the following error:
An error occurred while collecting items to be installed
session context was:(profile=epp.package.jee, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
Unable to read repository at http://dl.google.com/eclipse/inst/d2gwt/latest/3.7/plugins/com.google.gdt.eclipse.designer.doc.user_2.4.2.r37x201110181249.jar.
Read timed out
Unable to read repository at http://dl.google.com/eclipse/inst/d2gwt/latest/3.7/plugins/org.eclipse.wb.doc.user_1.2.0.r37x201109270322.jar.
GWT , GAE SDKs and plugins have been successfully installed though. ( and is running too)
I downloaded the JAR file from :
http://dl.google.com/eclipse/inst/d2gwt/latest/3.7/plugins/com.google.gdt.eclipse.designer.doc.user_2.4.2.r37x201110181249.jar
Now Where do I add this extension?
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该错误通常意味着您出现本地通信故障。等待几分钟，重新启动 Eclipse 并重试。
That error typically means that you had a local communication failure. Wait a few minutes, restart Eclipse and try it again.