No, after spending countless hours trying to determine what was wrong I have given up- my project is due soon so I have had to abandon this aspect of the scene.

I'm curious... are you having...

thanks for the advice guys but I have tried your suggestions and they were to no avail. Here is the problem in a little more detail (I just copied this from another forum that I posted the same...

Howdy,
I have attached to a polygonal plane a lambert shader with a .iff image sequence attached to its color and transparency attributes (there is an alpha channel layer with each image). I have...