我更新了我的 SDK，现在它说我需要拥有我已经拥有的 SDK。当我检查更新并尝试更新选项时，我得到了这个：
An error occurred while collecting items to be installed
session context was:(profile=profile, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
No repository found containing: osgi.bundle,com.android.ide.eclipse.adt,21.1.0.v201302060044-569685
No repository found containing: osgi.bundle,com.android.ide.eclipse.adt.package,21.1.0.v201302060044-569685
No repository found containing: osgi.bundle,com.android.ide.eclipse.base,21.1.0.v201302060044-569685
No repository found containing: osgi.bundle,com.android.ide.eclipse.ddms,21.1.0.v201302060044-569685
No repository found containing: osgi.bundle,com.android.ide.eclipse.gldebugger,21.1.0.v201302060044-569685
No repository found containing: osgi.bundle,com.android.ide.eclipse.hierarchyviewer,21.1.0.v201302060044-569685
No repository found containing: osgi.bundle,com.android.ide.eclipse.ndk,21.1.0.v201302060044-569685
No repository found containing: osgi.bundle,com.android.ide.eclipse.traceview,21.1.0.v201302060044-569685
No repository found containing: osgi.bundle,overlay.com.android.ide.eclipse.adt.overlay,21.1.0.v201302060044-569685
No repository found containing: org.eclipse.update.feature,com.android.ide.eclipse.adt,21.1.0.v201302060044-569685
No repository found containing: org.eclipse.update.feature,com.android.ide.eclipse.ddms,21.1.0.v201302060044-569685
No repository found containing: org.eclipse.update.feature,com.android.ide.eclipse.gldebugger,21.1.0.v201302060044-569685
No repository found containing: org.eclipse.update.feature,com.android.ide.eclipse.hierarchyviewer,21.1.0.v201302060044-569685
No repository found containing: org.eclipse.update.feature,com.android.ide.eclipse.ndk,21.1.0.v201302060044-569685
No repository found containing: org.eclipse.update.feature,com.android.ide.eclipse.traceview,21.1.0.v201302060044-569685
有什么解决办法吗？？我已经尝试了一切！