hey, i had that problem when i first tried apophysis, too! (seems awfully strange that it was only, like, 2 weeks ago... and now it has me in it's grasp and i can't shut the darned little program off) anyways, the problem was that it was looking for the enr.ucl file, and i had it as enr3.ucl... that might be backwards.. i just copied whatever one it was that i had, and renamed the copy whatever it was that i DIDN'T have, and worked fine after that... now, if i could just figure out how to make the REST of it work... laughing ...russalynn