No images show up on my website. Screenshot: http://ow.ly/i/2Np5F
This shows up in my error log:

[error] (13)Permission denied: file permissions deny server access: /home1/klikini/public_html/cache/Nature/treeoverhang_100_cw100_ch100_thumb.jpg, referer: http://www.snaperturephotos.com/index.php?album=Nature/

Try it for yourself and see what happens:
http://snaperturephotos.com/

The error actually tells exactly what the reason is. Please see:
http://www.zenphoto.org/news/permissions-for-zenphoto-files-and-folders

Thanks! I thought I had already tried that but apparently not the right way.

THANK YOU!!!