Android: Unable to instantiate activity / ClassNotFoundException

Question

I recently published an app to the market and I\'m now getting an error by some user, the app presumably crashes right when it starts. Unfortunately I can\'t contact him dir

Answer 1

Saw the same error message after doing a simple upgrade of my app. Fixed it by doing this:

Project->Build automatically OFF
Project->Clean->Selcting my project

Then I did a new export of my signed app, and it worked.