Add To Cart Button have to replace when prize is zero

Hi,

I have purchased a extenstion 'Request Quote If Price Is Zero' but its working on my category page only remaining all pages its not working in my opencart theme. i tried in other opencart themes it works fine in all pages. is ther anyway to make it working fine in all pages? i dont want to change the theme. Anyhelp?

thanks.

You need to check the vqmod/ocmod log depending on the type of your extension and see why it fails to apply to product.tpl and then modify the ocmod/vqmod to cope with the theme code.