I downloaded and setup the ADT Bundle from:
http://developer.android.com/sdk/installing/bundle.html
And, on the site it claims…
That’s it! The IDE is already loaded with the Android Developer Tools plugin and the SDK is ready to go.
However, their own demo project loaded in the IDE is not ready to go, since it fails with error:
Your project contains error(s), please fix them before running your application.
Funny, they try to blame my project in the error!
I don’t even have a project, yet.
So, their error should put the blame on them:
Our own demo project contains error(s), that we didn’t fix, so our demo failed.
I try to clean the project whenever eclipse “goes full retard”. Most of the time it solves the problem.