Android Studio Doesnt Build After Update

I have just updated Android Studio to build 130.729444, and my project (which built correctly before the update) has stopped to work, and Android Studio shows me the following erro

Solution 1:

Get same issue with IntelliJ 14 when try to add artifact. Removing .idea/artifact folder solves issue.

Solution 2:

I recently filed a bug report to Google. According to the thread in the Android developer tools forum this is an issue they can´t directly explain. I think this is as good as an answer we can get untill this bug is adressed by the developers.