Still working on an issue relating to orders where authorize.net processes the charge, but the order never gets recorded (Thanks to DrByte for his previous help.

Installed enable_error_logging.php in both the /includes/extra_configures, and when no error logs created, tried putting it into /admin/includes/extra_configures

Sat with a customer as they did an order. At end of order, they now get an error, "Email Error: Could not instantiate mail function", which is a new problem. Tried doing this with email configured to PHP, SMTP, SMTPAUTH, and Sendmail, all with the same error.

Charge goes through, but order not recorded. Item remains in cart, so session not closed.

Only things in the /cache file are the debug logs for each of the sales strings sent back by authorize.net

Am I looking in the right place for the myDEBUG-xxxxx.log files?

Also tried creating /includes/local/configure.php to see if errors would show up as we went through the sale, but no errors showing.

When we first set up the cart, all was working. Went live, started getting sales, but none of them got recorded. Only able to figure out the sale from the email generated by authorize.net

v.1.3.8a with Patch1
PHP5.2

Any help much appreciated.