Nope, Mach 3 on an XP PC through the parallel port. Nothing running other than M3. Also disconnected from the Internet and disabled Norton. One thing I noticed is that single G03 statements run fine, but both with this wizard and the od fillet wizard which will generate a hemisphere with the right parameters, they crash when there are a lot of G03s. Also just once I've got an error message from Windows when trying to shut down to say that shutdown failed because the M3 driver was still running, though the GUI bit had crashed and couldn't be restarted. I will try to see what happens if I reduce the number of G03s by making the cuts deeper. This only happens on my w/s Dell Optiplex, not on my Win7 laptop, but the latter runs only in demo mode of course.
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