Mach 3 new licence, now reset not working..

[Neale]

Yes, keep the XML - that's where all settings are stored. Be aware that a new install will overwrite the whole Mach3 folder structure, so copy files somewhere else and copy them back after re-installing. In fact, taking a "safety" copy of the while folder structure, just in case, is a good plan.

If you have a touch-off device, then almost certainly there will be some custom macros. Under the "macros" folder, there will probably be a folder with your machine name. Save that and put it back in the same place after re-installation.

There might be a custom screenset as well - look for files with the extension .set or .sset. This is where any changes to buttons or screen layout to drive the torch-off function will be defined. Again, save and restore afterwards.

Good luck!