I have something really weird going on. I created a gallery of images but it displays the same thumbnail for each and every image yet it links to the correct image and the 'cache\jw_sigpro' actually has the correct thumbnails but only the last one is display. The popup display and navigation works fine. The only issue is there is just one thumbnail displayed for all of the images. I do not have 'Single Thumbnail' enabled.

Now I had RokBooster set with Style Sheet Settings and Javascript Settings as disabled. But once I disabled RokBooster completely, the gallery displayed as it should. So I reactivated RokBooster and did some configuration changes. I found out that in RokBooster if the 'Inline Page Images' setting in the 'Images Setting' tab is set to 'Yes', it displays just the 'last' generated thumbnail for all images in a gallery.

Can someone explain to me how that happens?

Hi. This is a know issue regarding RokBooster. Probably you have to ask it's developers why this is happening. Let us know when you have any news on this.