Android Studio hangs / Freezes when project build fails

Question

I am experiencing a very wired problem since this evening.

If I have any errors in my android project, and build is failed, then my Android studio gets frozen / stuck. I

Answer 1

In my case the same thing happened, after I had added image-resources with dashes in the filename.

I manually deleted them, renamed them, and added them with underscores in the name, and Android Studio worked normally again.

(I am not sure the dashes were the reason, why should they, but doing the above fixed it.)