in-app purchase crashing after payment

STEPS TO REPRODUCE:
1.Purchase live product 
2.Crash after purchasing 
3.It doesn't happen always 

EXPECTED OUTPUT: After purchase it should come back to activity 

ACTUAL OUTPUT: App crashing after successful purchase.

AFFECTED ORDER IDS (IF RELEVANT):

OS VERSION: 4.1.2

MARKET/MYAPPS VERSION:Google Play

DEVICE:Nexus S

OUTPUT FROM ADB BUGREPORT ATTACHED:
(Note: The output from "adb bugreport" is required for all bug reports.)

NOTES: I have implemented in app purchase in my app I have used "TrivialDrive" 
example for version 3 of in-app billing, I have tested app by using static 
responses all works as expected.
But when I download app from market, application crashes on successful purchase,

Its throwing Null Pointer Exceptions in onActivityResult() method on this line

if (!mHelper.handleActivityResult(requestCode, resultCode, data))

more details are here 
http://stackoverflow.com/questions/14785048/android-in-app-purchase-crashing-aft
er-payment

Original issue reported on code.google.com by makrandm...@gmail.com on 9 Feb 2013 at 2:07

Attachments:

Error.rtf

RandeeCao / marketbilling

in-app purchase crashing after payment #102