@Lyle, I think this is a PHP4 vs PHP5 problem. I am thinking the code from simplexml.php is not php4 friendly. I was working on a client site on my PC (LAMP with PHP5) and all worked well. I transferred the files and database and suddenly this same error message came up on the cart and checkout pages.

I am using UCa8 at this point, I would like to "hide" these errors for the time being until a permanent fix is in place OR until the client gets his host to do php5.

Any ideas?