Paypal PRO misfiring? Changed code?
I set up a checkout for a client a month ago and everything was working fine, but now when she tries to complete a transaction, (not using her paypal email) she is getting a Paypal cannot complete the transaction error...
Has Paypal changed anything?
She is using credit card transactions and not the paypal transaction.


No paypal hasn't changed anything that should effect you. She may be using bad credit card or date syntax. You would have to add debug code to the failure page to find out more. 
