I'm having a problem with the gcode that SheetCAM generates the F command is 60x higher than it should be. If feed rate for the tool is 2 IPS the F command says 120. I looked at some old gcode files that Sheetcam generated and they look correct. I'm using SheetCAM 5.0.1 on WinXP without a network. Its worked ok for a long time. Not sure what happened, but there are other users... Any ideas? Can I upgrade to latest and still run XP? Thanks,