Bob, if you check out the following thread:

http://www.largescalecentral.com/forums/topic/26509/-/view/post_id/330428

you will find lots of info about a GIF problem.

Basically, if you upload a GIF, the Freight Shed changes it from xx.gif to xx-gif. Changing the displayed file name to xx.gif doesn’t help, as the underlying file is still xx-gif. The same is true in the Albums.

A GIF on another storage location works just fine.