I had this problem a while ago. The problem was that the Autosave was using the active Mastercam filename. I did a manual save at the same time an autosave was taking place resulting in a locked computer and a null file (lost work). Go into the system configuration menu, Start/Exit, Autosave - and uncheck "Save using active mastercam filename". It won't happen again but your SOL this time.

Thanks for the suggestions! To answer them.... Steve, neither psof nor ptlchg0 calls ptlchg. I get no output what so ever from those sections regardless of which post processer I use (I tried the same toolpaths on a couple dozen posts). This leads me to believe that it is a MasterCam setting that is causing the issue. Still lost. Heeler, my processer, given the little issues, does a better job for the DPM-V3 than the protomx3 post. By the way, it also gets no output from psof or ptlchg0. Psychomill, changing how the tools were selected did not seem to make any difference. I did find an unusual path around the problem though. My issue is really with the M6 not the tool number. The DPM-V3 goes to the toolchange position and stops the spindle each time it sees M6. It seems that the ptlchg section will not recall the tool number if it is the same. It will however recall the M6 regardless. What I did was, in the "NC OUTPUT VARIABLES FORMATS" section I changed the format of the #Tool Number output to M6T instead of just T. If that makes any sense. Odd but it worked for that issue. I still would like to get output from psof. Thanks again fot the help, any more suggestions will be gladly accepted.

I am pretty new to MasterCam but have taken the time to edit the Generic MPFAN post to work on a ProtoTrak DPM-V3. My post seems to work fine except that when a null tool change is supposed to occurr the post still uses the "ptlchg" section of the post instaed of the "ptlchg0" section. I need to eliminate the tool number and M6 command "T2M6" when a new operation begins with the same tool. Can anyone tell me what I am doing wrong. The post also does not seem to be using the "psof" section either. Enabling this would also be useful. Thanks