I haven't used my rotary table for a while. I use the A-axis for it. I recently re-installed Mach on a new computer and have a Smoothstepper I'm using as well. Got a lot of the bugs out of things that were inherently Smoothstepper related. Have been using the mill for a while and all has been well. So once I decided to get my rotary table up and running (after tearing it apart), I went to config/motor tuning and it seemed to respond by closing the config drop down but ...no motor tuning screen!?!

I mention having the Smoothstepper because any new problems seemed related to it but this one seems a little left field. All the other config windows come up, only the motor tuning window is a 'no show'.
Any ideas?-Keith

That never happened to me in any installs or upgrades. Maybe try reinstalling Mach.
RICH

Reinstalled and all is well.
-Keith