XML image issue

Hey, I’ve been reading through this forum for a few weeks and its been a HUGE help to me while I’ve been building a dynamic flash gallery. I’m in the mists of getting everything done and almost finished with the gallery, only problem is that some of my images don’t load right

all the links and directory references work on my gallery when it’s being previewed and tested off line. However one I upload the files and go to the gallery, things go wrong. At the moment my gallery shows 5 thumbnails out of 6 then you can scroll down to see the rest. The first four images will link to their full size image correctly, the last two that are either fully or partly masked off do not link at all. All 6 link correctly when previewed off line from my hard drive though.

Any ideas of what’s going on?
online gallery
XML file