Setup lw4 on a new machine and seems it’s due to a grid size setting. It was obscured in the settings menu either way it crashed and now this. Tried uninstalling and removing all folders but alas nothing.
@Michael_Scholtz try deleting this folder and reinstall
\Users\tony\AppData\Roaming\lw.comm-server
#LWWHITESCREEN
Thanks that did it. I had visions of having to use grblcontrol
again.