I am facing a problem when I try to create new android project in eclipse adt plugin tools.
ERROR/EXCEPTION::
Errors occurred during the build.
Errors
You usually get this after an SDK/ADT update.
Go to your SDK manager and ensure that there are no updates. Then in Eclipse go to Help > Check for Updates and install any updates it finds.
Restart eclipse and hopefully it should all work.
Failing that uninstall Eclipse and re-install Eclipse and the plugins again should fix it as well, no need to re-install your whole PC.