gorf23,
Copy your current Mach4Hobby full directory somewhere else on your computer system.
Then rename the directory to say Mach4HobbyMW.
Make sure that your have all the MW files in the Plug in.
Also make sure that in your profile you have the ModuleWorks directory.
Make sure that the Licenses are in the License directory for MW.
Then move the Mach4HobbyMW directory back to C:\
Then this will be used a the MW only and the other will be used for your Milling Machine.
If that does not work then reinstall MW onto this new directory.
Regards,
Mauri.