I have tried the solutions offered in this thread, but am still unable to get my additional images to display. They were showing for some time but something I have done has caused them to dissapear. I've tried changing templates, removing overrides etc with no luck. Have tried removing Image Handler. The source code shows:
<!--bof Additional Product Images -->
<!--eof Additional Product Images -->

Please have a look at the site and let me know if you think I may have missed something?
http://tinyurl.com/ns3tyq