Apps Error in installing ADT plugin - need help

[sadaqatdj]

Following error appears when installing the plugin to eclipse. need help with it.

An error occurred while installing the items
session context was: (profile=SDKProfile, phase=org.eclipse.equinox.internal.p2.engine.phases.Install, operand=null --> [R]com.android.ide.eclipse.base 20.0.1.v201207132230-403220, action=).
Failed to prepare partial IU: [R]com.android.ide.eclipse.base 20.0.1.v201207132230-403220.

 

[lunatic59]

I moved this thread to Application development and put a redirect link in the Computers & IT forum to get more eyes on it. I hope someone can help you with this.