"Invalid date" error when checking out

[gdinari]

Something strange happens when I try to check out. When I go to finalize the order (by clicking "confirm order" with check payment), On the next screen I get an error message: "Invalid date." I don't know what this means. I searched the files and found this piece of code associated with it...

if (!$date OR !strtotime($date))
            return $date;
       if (!Validate::isDate($date) OR !Validate::isBool($full))
           die (self::displayError('Invalid date'));

I don't know how to fix it or what caused it. I would appreciate any help on the issue.

The link to the site is HERE. Please take a look to see how this problem can be fixed.



Thanks a lot,

gdinari