GPGS Error 10002

When running GPGS trying to login, an error code 10002 is returned, which is a failed sign in. When not using a user initiated login, I receive a Java runtime error on Android instead which crashes the app. Has anyone else had experience with this kind of error?

Figured it out: I was using Google Play App Licensing but testing on APKs I signed myself, had to download from Play Store or download the derived apk after uploading to Play Store and no issues.

Figured it out: I was using Google Play App Licensing but testing on APKs I signed myself, had to download from Play Store or download the derived apk after uploading to Play Store and no issues.