eclipse3.7 INDIGO安装adt 缺少条目时的解决办法

eclipse3.7 INDIGO在安装adt的时候

也就是，add again the ADT location http://dl-ssl.google.com/android/eclipse/的时候

出现如下类似错误

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1. Cannot complete the install because one or more required items could not be found.  
2.   Software being installed: Android Development Tools 0.9.9.v201009221407-60953 (com.android.ide.eclipse.adt.feature.group 0.9.9.v201009221407-60953)  
3.   Missing requirement: Android Development Tools 0.9.9.v201009221407-60953 (com.android.ide.eclipse.adt.feature.group 0.9.9.v201009221407-60953) requires 'org.eclipse.wst.sse.core 0.0.0' but it could not be found  

Cannot complete the install because one or more required items could not be found. Software being installed: Android Development Tools 0.9.9.v201009221407-60953 (com.android.ide.eclipse.adt.feature.group 0.9.9.v201009221407-60953) Missing requirement: Android Development Tools 0.9.9.v201009221407-60953 (com.android.ide.eclipse.adt.feature.group 0.9.9.v201009221407-60953) requires 'org.eclipse.wst.sse.core 0.0.0' but it could not be found
需要多做一步

参考http://stackoverflow.com/questions/4249695/adt-requires-org-eclipse-wst-sse-core-0-0-0-but-it-could-not-be-found

1. help->install new software

2. click on "available software sites"

3. select all entries (CTRL-A) and remove them

4. add new entry at location http://download.eclipse.org/releases/indigo/

5. now add again the ADT location http://dl-ssl.google.com/android/eclipse/