I've finished developing a game, but it's very annoying that sometimes (yes, only sometimes!) when I open it, it fails, and I can see in logcat this error: java.io.IOException: Prepare failed.: status=0x80000000.
It's very weird because it's a local file (2MB mp3 file), and I don't know why it shows a IOException. And only sometimes, not always...
EDIT: It seems that is related with proguard, because it only happens with release version...