Just wondering if anyone is aware of a bug or any reason why Paypal Standard IPN notifications have suddenly stopped updating our event participant status to registered and the associated contribution record to complete?
I can see the IPN from Paypal hitting the server in the access logs and it is receiving a '200' status.
The IPN history in Papyal shows everything ok.
I can see the entry in the civicrm table in the database.
Everything seems to be fine apart from the fact that the participant records are not being updated to registered and the contributions are still showing as 'Pending transaction'?
It seemed to stop only a few weeks ago - not 100% sure but I did upgrade the system to the latest 4.6.18 version around the same sort of time.
Any thoughts would be welcome.