Hi,
I'm having a similar problem here, but slightly different. When I try and optimize the gif animation, the transparency somehow screws up.. let me try and explain.
In for example my 4 frame animated button, all 4 layers have transparent backgrounds (and I deleted the background frame that comes as a default in PS/IR as well), the Transparency tab is checked in the OPTIMIZE palette, and when I go to save as an optimized gif file, the final product comes out as a rather jumbled animation, where each frame is superimposed upon the next, so the final frame looks like a giant squiggle of all the previous layers and frames. In the psd file before optimization, each frame has only the specific layer showing, so I just don't get it. What exactly does this Transparency check do to the animation?
Thanks a bunch for any help here.