Default Activity not found in Android Studio

Question

I just upgraded to Android Studio 0.2.8 and I am getting an error that says \"Default Activity not found\" when I try to edit the run configurations.

When I launch A

Answer 1

I ran into the same issue today and was going through the answers here.

For me the difference was that yesterday it worked fine, so I figured it could not really be a configuration issue, neither configuration nor Version of Android Studio changed.

Fortunately, I tried a restart of Android Studio before trying any of the other answers, and luckily that solved the issue.

So for all people out there who run into this: first thing to try is to restart Android Studio and only if that does not solve the issue try the other answers here.