I made a patch, in my osx 10.7.4 Macbook pro, using edgeblend shader, it works fine in mi laptop, but when I copy it to a new Macmini, the edgeblend works faulty, when I move one parameter it affects two sides, instead of one, the left side moves the blending on the top and left, and the right, moves the right and bottom.... Any ideas?

Thanks.