Hi,
the .m4pw and .sig files are a plugin and its signature file. They are written, provided and maintained by the company that makes the motion controller.
Can you tell us about the motion controller?. I've been using Mach4 for eight years and don't recall any Mach4 controller called a 'fly motion controller'
To my knowledge the following is a list of the manufacturers of Mach4 ready controllers, ie that have .m4pw and .sig files:
1) Warp9TD for the Ethernet SmoothStepper
2) CNCDrive for the UC100, UC300 and UC400
3) PMDX for the PMDX412,426 etc
4) Vital Systems for the Hicon
5) PoKeys for the 57CNC and 57CNCdb25
6) CSLabs for the CSMIO/P and CSMIO/A
7) XHC-avoid like the plague, the plugin is extremely buggy and works only with wxMach and will not work with Mach4GUI
Is your controller one of these?
Craig