Your project contains error(s), please fix it before running it

Question

I am developing a simple Android application. But when I run Eclipse, it shows the following error:

Your project contains error(s), please fix it befo

Answer 1

I have had a similar problem.

Under "problems" tab I have found an error saying "Error generating final archive: Debug Certificate expired on 2/22/12 1:49 PM"

So my advice is to look in the problems tab to get some more info.

Bye