它始于R错误（我没有多少清理项目），然后即使我选择目标SDK为18，它在项目创建时显示的格式是Kitkat（19）然后它说在一个奇怪的位置找不到存储库。
现在，当我尝试检查更新时，它会在16％后停止并给出以下错误：
找不到某些网站。有关更多详细信息，请参阅错误日志。
No repository found at http://download.eclipse.org/rt/rap/1.3/runtime.
No repository found at http://download.eclipse.org/tools/emf/updates/.
No repository found at http://download.eclipse.org/technology/emft/jet/update-site/site.xml.
HTTP Server 'Internal Error': http://dev.eclipse.org/svnroot/dsdp/org.eclipse.tm.tcf/releases/0.4.0/content.xml
HttpClient connection error response code 500.
No repository found at http://www.eclipse.org/modeling/mdt/?project=papyrus#papyrus.
No repository found at http://download.eclipse.org/tools/mylyn/update/e3.4/.
No repository found at http://download.eclipse.org/mat/1.1/update-site/.
No repository found at http://download.eclipse.org/tools/ptp/updates/indigo/.
No repository found at http://download.eclipse.org/modeling/emft/eef/updates/0.7.1/.
No repository found at http://download.eclipse.org/tools/gef/updates/releases/site.xml.
No repository found at http://download.eclipse.org/stp/updates/.
No repository found at http://download.eclipse.org/modeling/mdt/papyrus/updates/releases/.
No repository found at http://download.eclipse.org/tools/orbit/downloads/drops/R20100519200754/repository.
No repository found at http://www.eclipse.org/modeling/emft/?project=search#search.
No repository found at http://download.eclipse.org/rt/rap/1.3/tooling.
有人可以帮忙吗？
P.S。 R错误仍然普遍存在。它不会去。