I have Mach 3 that I run on my machine, and another copy that I keep on my programming computer, they both run Windows 10
I have started to see an issue when I run a program on my programming computer where it will start a program and go to the M30 block and then just stop, and after about 5 sec it will rewind and go back to the  first block.

I can take the same program, attached, and run it on the machine fine......I dont understand it.
Any thoughts on how to fix this?
Tom