i built my cnc from plans,bought breakout board,motor drivers,stepper motors from Probotix. i got my software from Bobcam ,Bobcamv24. i loaded a program it loaded the G codes the machine worked wounderful until it got to G-code line 500 and stopped. tryed another and it stopped on line 500 . does anyone have any help for me.Bobcam tech support is to expensive for a home hobbie .thanks alot for anyone that can help me