Rc,
I just tried LAZCAM on another computer. ( man what a difference on a fast machine with lots of memory).I got the same error message. More than once. I didn't reboot, but changed the TOOL ANGLE to a value of 10 instead of .1 or .0001 and all was good. Then tried different parameters and still had no problem. Think the tool angle is the culprit. I tried the 10 value with a diamond and buttom shape seemed ok.
Need to tr it iin a more disciplined manner to really confirm.
RICH