Richie,

Taking a look at your store, it appears that you still have the code that is responsible for making the '.' at the end of the e-mail address. I verify this by beginning the COWOA process, and then going to the 'Contact Us' page.

The code that does this is one of the mod specific files, /includes/modules/YOUR_TEMPLATE/no_account.php.

The line:
$email_address .= ".";

I went ahead and verified that this is not in the new package. Perhaps there was an overwrite error? Or maybe the old file is in the override folder, but the new one got placed in the default folder? If you try overwriting again and it doesn't solve the problem, do a developer's toolkit search for that line of code above.

I hope this helps,
Joe