Android Studio: failed to complete gradle execution, cause is empty

Question

When I try to run an Android emulator, I get the following error screen. The same occurs when I export the apk. When I go to the directory where the apk will be saved, the a

Answer 1

I had the same problem, and the problem was gone after upgrading my Android Studio from 1.2.1 to 1.5.1. There was no error even after adding --stacktrace --info to VM options. Gradle tasks would finish successfully, but the application just wouldn't launch (and studio would gray out the run button forever, probably waiting for a response from emulator). I had tried everything else mentioned here.