Here we go again. This is the third computer and the same problem still comes up. I am running a program that drills some holes, cuts a few pockets and then profiles. This is the first time I ran this program and I noticed that I did not make the first pocket large enough, so I stopped the run, went to zero and made a few programming changes. The program ran fine then all of a sudden the toolpath runs off to wherever. Again the origin was reset or changed somewhere, somehow by Mach. Take a look at the photos, I pushed Go To Zero which was no where close to being correct. I manually ran the table back to where about 0,0 SHOULD BE, it is off by over 3.5 inches. Seems weird how three different computers are having this same issue. There has to be a glitch or bug somewhere. Also this is the second time that I ran that pocket program, the first time I had no problem. So I don't think that the problem is in the program. I ran the machine for about 10 hours today with no trouble. Any thoughts? I can't belive that I am the only one that is experiencing this kind of problems on a continuing basis. If the DROs didn't change I maybe blame the drives or steppers. If this hadn't happened on three different computers I would blame the computer, but the only thing that is consistent is Mach and me. I'm pretty sure it's not me