I think I've mentioned it before, but make sure the dimensions of blur.bmp are exactly a power of two. If it's off by just one pixel, ModSuite will run very slowly or not at all. Some examples of power-of-two dimensions: 2^9 x 2^9 = 512 x 512 2^8 x 2^7 = 256 x 128 2^11 x 2^11 = 2048 x 2048 the size...