Hi Will,
Just to let you know... a quick search of the forum for "payment_type_full" indicates that your problems are being caused by a problem with your installation of the "super orders" module.
So re-installing it might sort out your problems. Hope that helps! :)
All the best...
Conor



and when checking the Protx FAILED TRANSACTIONS records was surprised to discover loads of INVALID & MALFORMED errors as shown below
