I have tested my app on numerous devices and this never happens, but when I look in my Android Developer Console, I am seeing a lot of these:

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.MyApp/com.MyApp.ProductMain}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1696)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1716)
at android.app.ActivityThread.access$1500(ActivityThread.java:124)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:968)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3806)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.MyApp.ProductMain.onCreate(Unknown Source)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1660)
... 11 more

To me, this really doesnt tell me much, but maybe someone can read this better than I???