Sounds to me like another Poser memory issue... first check on the basic material tab, and see if the map has been changed in there... Ive seen it sometimes make the change in one and not the other... If that doesnt help, save your project, and restart poser, and open it again...maybe the memory just needs to be flushed...

"If toast
always lands butter-side down, and cats always land on their feet, what
happens if you strap toast on the back of a cat and drop it?"

Steven Wright