I know I posted about this a few months ago, but I never did fix it properly, so now I'm throwing it out as a paid fix. Here's the error. I think it's happening when players press the achievements button on the games main menu. I'm will to send you the code, then after I upload the fixed version you provide, if the number of crashes drops right down in the following 7 days then I'll pay you. The game uses the LibGDX library, admob and google play services.
java.lang.NullPointerException:
at flm.b4a.googleplay.AchievementsWrapper.Load (AchievementsWrapper.java:86)
at uk.co.coffeeinducedgames.invaders.main._load_achievements (main.java:5040)
at uk.co.coffeeinducedgames.invaders.main._startnewgame (main.java:5812)
at uk.co.coffeeinducedgames.invaders.main._ip_touchup (main.java:3048)
at java.lang.reflect.Method.invoke (Native Method)
at anywheresoftware.b4a.BA.raiseEvent2 (BA.java:186)
at anywheresoftware.b4a.libgdx.input.lgInputProcessor$1.touchUp (SourceFile:95)
java.lang.NullPointerException:
at flm.b4a.googleplay.AchievementsWrapper.Load (AchievementsWrapper.java:86)
at uk.co.coffeeinducedgames.invaders.main._load_achievements (main.java:5040)
at uk.co.coffeeinducedgames.invaders.main._startnewgame (main.java:5812)
at uk.co.coffeeinducedgames.invaders.main._ip_touchup (main.java:3048)
at java.lang.reflect.Method.invoke (Native Method)
at anywheresoftware.b4a.BA.raiseEvent2 (BA.java:186)
at anywheresoftware.b4a.libgdx.input.lgInputProcessor$1.touchUp (SourceFile:95)