when i click on th image to display on big size it doesnt display and it show blank page. doesnt anyone knows why.
plus u can try to click on the link and then click on the image to see how it doesnt appear.

http://www.bikawiautosports.com/gallery/index.php?album=autocross%2Femsf%2Fautocross-2007

Can you try one of the distributed themes? Maybe the thinkdreams theme does not work with the version of zenphoto you are running. Also you might try a more recent zenphoto release.