Jim, glad to know you are making progress with CamBam. Once you get the idea of the workflow, going from drawing to creating toolpaths to GCode it gets easier. When you click the exit Gcode button in Mach3 it will pull up what ever GCode you have loaded in Mach3 in Notepad. If you don't have the GCode loaded in Mach then it won't bring anything up. You could also load CamBqm on your shop PC as well, just don't try to use CamBam while Mach moving your machine. One other tip is to copy the files from you pen drive to your shop computer, don't run them off the then pen drive; strange things can happen if you do.