I have just upgraded from 2.5 to 2.6 of the Classifieds and everything appeared to be functioning fine until I went to view an existing add. The showproduct.php pages all generate a completely blank page.
My first thought was that I didn't get all the files uploaded but I have gone back and uploaded them again and still have problems.
My main classifieds are located here:
http://www.airsoftretreat.com/classifieds
And an example of the blank page is here:
http://www.airsoftretreat.com/classi.../product/12902