Eclipse Error: Intializing Java Tooling

This is one of your projects that is probably causing the problem, you will have to identify one of them that is causing the error java.lang.NullPointerException , this error is very generic, it can be anything you did, pass a null variable to a specific method, type try to use File , and pass null to the file name.

You can try "clean mode":

c:\ecplise\eclipse.exe -clean

I still recommend that you review all your projects, or a lib or one of them should be causing the message.