Cannot complete the install because one or more required items could not be found.

下午再调试程序时，ADB突然崩溃，重启也无效果，在升级了 SDK Tools以后，Eclipse又不能正常使用了，无法识别Android SDK 路径

果断又升级了 Eclipse 4.2  ，安装 ADT20 时还是提示 

Cannot complete the install because one or more required items could not be found.
Software being installed: Android Development Tools 20.0.0.v201206242043-391819 (com.android.ide.eclipse.adt.feature.group 20.0.0.v201206242043-391819)
Missing requirement: Android Development Tools 20.0.0.v201206242043-391819 (com.android.ide.eclipse.adt.feature.group 20.0.0.v201206242043-391819) requires 'org.eclipse.wst.sse.core 0.0.0' but it could not be found

寻找了半天，有博友说 升级到 Eclipse 4.2 + ADT 20 + SDK 20 能正常使用

目前正在 更新ＳＤＫ２０

待会再继续写。