Hello Rich,
after a half dozen emails with Scott re Mach Licence, last night I finally got Mach3 licenced and running, by copying from the Mach3 file on my shop machine and pasting, I have just checked Mach3 file in the faulty computer, I have three licences listed Mach1.dat, WizLic.dat, and Newfangled Wizard lic, cannot see licence for Lazycam in any of my three computers and the two in the shop work perfectly,
...............Edmund..............