Sometimes, and far too often, Mach3 will stop at a line of code and report that it is "Generating Tool Path" and not continue until the path has been generated. It will do this for every line of code. I hit cancel and it will go to the next line of code then do it again.
Doesn't seem to relate to any specific line, it happens randomly. Yesterday I was running a proven code and it just happened. I had to shut everything down and re-start, then AOk.