Problem with extrafanart not cycling in background

Hello,

There are some problems getting the backgrounds to correctly cycle through extrafanart folders. For some reason, this seems to be exclusive to the movie folder, and not TV Shows. All artwork downloads are conducted via the artwork downloader script; non-default artwork selections is done via "choose art" in the movie info page. Under viewtype settings -> background customizer, fanart: Extra-Fan art is the selection.

The frustrating part is that it works with properly with approximately 50% of the movie titles. I'll give an example: Dredd and Drive. Here you can see that both have identical structure, but Drive will have zero problems finding the extrafanart folder, and cycling through the images, while Dredd will only show the single fanart.jpg.

I've tried deleting everything in the folder that's not the movie and redownloading, I've tried refreshing from both internet and local content, and I've tried removing the film and re-adding it to library, and zero luck. I can't for the life of me figure out why some titles work perfectly, and others are.