I believe it was looking for the mwMachSim.ini that is in the my mcamx5 directory. I worked with the computer some more yesterday, and after doing some diagnostics I believe it was caused by a corrupt custom config file. I first checked all permissions for the user, and that was fine. I then set Mastercam to use the default config file. This seemed to correct the problem. I then checked the mwMachSim.ini file, and it then had a current modified date. Machine Simulation is now working the way it's supposed to. I don't know exactly what happened to config file that caused the problem other that it was corrupt.

When I start the Machine Simulation in X5, I get an ini file not found error, and simulation aborts. Has anyone else seen this error? If so what did you do to fix it?