When I'm working on an effect filter and I load a test image it works fine the first time. But if I try to load in a second image it does nothing. And on the rare occasion that it does pass the image through there's an after image of the first test image showing through like a raised embossed effect. I have to save the filter and then it works as designed. Also, there's something going on with my mouse cursor. It moves around a lot faster inside the filter editor than anywhere else.

"Art is quite useless." Oscar Wilde