Cannot run Android application on emulator/device - activity doesn't exist?

Question

When trying to run my application on the emulator I get an error from the activitymanager:

ActivityManager: Error type 3

My activity exists, is listed in the manifest (in fact, its the MAIN launcher activity).

Anyone know what this error means?

Answer 1

Dont remember how I fixed this - most probably I wiped the local copy and re-checked out of svn.