Transaction that didn't go through.

[Wegg]

I just got an e-mail from a customer that purchased membership to my site and the transaction did not go through.  After some investigating I can see that my paypal account received the funds but that this customer's account on my site did not get moved into the appropriate member group.  :-(  What is strange is that there was another purchase made just before his and that transaction worked.  I can see that he is downloading products. 

[SMFHacks]

What type of transaction? normal paypal,credit card or echeck that had to be cleared?

Also check your error log around that time it processed to see if you can see any related errors.

[Wegg]

Normal paypal.  Customer is in England.  Where. . . do I find these log files?

[SMFHacks]

Either the forums error log

Or if you enabled transaction logging in the storeipn.php it would be the store_debug.txt file in your forum root directory.