GrayscaleEffect shader broken in 3.5?

Hey guys and dolls!

I just upgraded to 3.5 and a number of the Image Effects in Pro are broken. I was using the GrayscaleEffect Image effect and the Noise effect in the previous build of my game on iOS and Android, but now it says "Shader has errors or is not supported by your graphics card". I get no errors when I try to run the game, the effects do nothing at all, and if I turn them on manually, the entire screen goes pink.

Has anyone else run across this? I have deleted the Image Effects (Pro) package and reinstalled it to no avail.

Thanks!