I purchased some new CNC which were loaded with Mach4 and I am using Mach3. My RhinoCam wants $1500 for upgrade to just do post processing for this mach4. I am trying to see if anyone used another psot processor for another software where it will work for Mach4. I have close to hundred different post processor it would be awesome to find this so I don't have to pay this upgrade on CAM and just use a different one in place of this. thanks Joey