Second post today - sorry, I'm new! I uploaded a collection of pictures into a gallery. All the pictures were originally edited at the same time, and were previously displayed fine in a different gallery package. One of the pics doesn't display as a thumbnail in ZenPhoto, though displaying the original works fine. I've tried re-uploading. regenerating thumbs, and switching between pre-installed themes, with no success. The file is shown here (http://photos.ciara.us/2003/jan/page/2/) - 29Jan2003-09.jpg. Thanks for any help you can provide!

Please review the troubleshooting section:
http://www.zenphoto.org/2008/08/troubleshooting-zenphoto/#10
http://www.zenphoto.org/2008/08/troubleshooting-zenphoto/#11

Thanks acrylian - I checked through, and everything I have control of falls withing the required levels (image size, etc.) I tried the '&debug' trick, and get the following message:

The Zenphoto object you are requesting cannot be found.
Album: albums/photos.ciara.us/2003/jan/29Jan2003-09.jpg
Theme page: index

That's odd, as not appending the '&debug' to the image url shows the image fine (it's only the thumbnails that don't show up.

I'll speak to dreamhost about the other settings, and to see if they can help generally.