I upgraded from version 25 to 30 and opened a Bobcad file into v30 that I had used several times in v25. I tried to simulate the program and it gave me a message that "the machine limits are reached and exceeded for: Second Tr. Axis(y) =-673.10(Min. -400.00)". I had saved the file in v30 so now, I couldn't use v25. So I'm stuck. Any suggestions how I could get v30 to work???