Does it error when running in Preditor Editor Backplot ?
If so that would be it where it stops
Or does it error only at the machine ?If so that part of the program where it goes screwy should point to it
Do you not have any line numbers in program ?
What kind of part you running.An engraving ?
Engraving of .dxf files can sometimes give problems
Track down with Preditor when and where it happens
Sometimes it is just a slight drawing error