I followed the instructionsat this link to allow me to build Xcode apps on my iPhone 4s running 5.1.1, but I now get the error "this is not a test user account, please create a new account in the sandbox environment" when I try to do an in-app purchase.

I do NOT have any cracked apps on this device nor have I ever, and I have verified that the /var/mobile/tdmtanf file has been deleted and verified that I do not have ******* installed.

Is there any other way to get myself out of the sandbox environment that I seem to be stuck in?