When I launch my app I get the following error:
V/GoogleSignatureVerifier(4962): com.myapp.application signature not valid. Found: V/GoogleSignatureVerifier(49
The only solution for me was to downgrade the Google Play Services to version 8.7.02 on my devices. I know it is not a long term solution but it works for my tests, and I hope I'll find a better solution in the future...