Today I published my app, and when my friend tried to buy the in-app content the market says: \"Your request could not be processed. please try again\".
A few clarif
Couple of things you have to consider.
In your code use logcat to find the status code. (Use billing receiver for any purchase request code). or Error : Developer Error.
Be sure you are signing with correct keystore.
FYI onRequestPurchaseResponse() inside Dungeon.java get the Response.
Hope will help you.