Thanks, I should have check first. It seems that Colorbox Pro is responsible. I will have a look to see if I can find a work around. Any other help would be appreciated. Thanks again.
Good luck with this, I have about 50 sites with this issue, all have various assorted plug-ins and themes. I am sticking with it the plug in still. I really like the new format…
Reading all other support details I decided to reset permalinks and hey presto everything works now. Thanks.