I found only one conflict issue in your website, which is this:
TypeError: selectBox is null
And it is an innocent issue. You can eliminate that conflict issue if you are so picky.
1- open this PHP file: ROOT/templates/flexible_lightmart/html/com_virtuemart/productdetails/default.php
2- find this line:
JHTML::script("productUpdater.js", $FlexiblePATH);
3- replace it with this:
// JHTML::script("productUpdater.js", $FlexiblePATH);
That conflict will be gone. Beside that error, i didn't see anything wrong.
Regards,
Support & Development