Truth be told, Photopost (the software we use to run the gallery) is an odd animal, it works well for the most part but try deviating a bit from its default usage and you will hit a wall...
I just found a manual solution to get rid of all queued/problematic uploads for all users, can you try uploading now to see what happens?
Thank you.
enonymous, can you please send me the picture(s) you are trying to upload to my email? That will help me troubleshoot... julio@techspot.com
Thanks!