Quote Originally Posted by MCS_Computers View Post
When the product was clicked all I got was a white screen with the word error at the top.

I went and checked I had put the code on correctly and made sure there was no spaces after the code, everything seemed to be in order, my first reaction was that maybe one of the files had been taken over by the theme.
Thought this had been provided previously in another thread related to a different issue, but follow the below instructions when presented with a blank screen or partial blank screen. Even if the issue is a little different than that, you can expect to find assistance in following it: http://www.zen-cart.com/content.php?124-blank-page