I just installed your contribution for must-select options. I got this error message when I clicked "add to cart" without filling in required selects (2 of them in my product attributes):
PHP Fatal error: Call to a member function on a non-object in C:\webroot1\domain\webmaster\domain.org\www\folder\osc_test\includes\application_top.php on line 378
Can you provide some guidance on fixing it? I copied and pasted your code, following your instructions, and I am using only the "single value" portion. My "--Please Select--" option value is set to ID #1, which I changed from your #9, in one location in the code.
Am I doing something wrong?
Thank you in advance for your help :rolleyes: