Image Gallery Thumbnails Not Working

I've had the Image Gallery module for a while, and It's worked fine for me. However, I recently uploaded some images, and encountered a problem.

The Images I uploaded appeared in the gallery, but two of the thumbnails were of other images that actually aren't even in that gallery. (Though they are uploaded to another section of the gallery). When clicked on, the thumbnails become the coirrect images, but the gallery page is still wrong.

Does anyone have any ide what's going on? The gallery is here: http://www.wickedlovely.com/image/tid/18 and the images are the first three. (the Middle image is, for whatever reason, fine)

Thanks!