This cart has been setup and working well for years. Recently it began to send this error message:
This transaction couldn't be completed. Please redirect your customer to PayPal.10486Error63.015295733
Apparently this error is happening when someone attempts to pay with PayPal but chooses to pay with their credit card instead of logging in or setting up a PayPal account.
The cart did have some issues with duplicate transactions that Ray had worked on but this doesn't seem to be related.
Thanks in advance for your help.