I currently have a magento website and process credit cards with authorize.net. Once you get to the end of checkout and hit the submit button instead of taking you to the checkout success page it gives an ERROR 500 page error. This only happens when you select [url removed, login to view] as a payment method. It works fine if someone selects money orders or paypal.
Also the transaction makes it to [url removed, login to view] and shows up in the magento admin area so the information is getting through just fine however it just wont show the correct page. I need someone to fix this error problem and have it go to the checkout success page.