Hi, I have followed this thread as best I can but nothing helps me. I have problems with being able to run the Configurator in 2.1 rc2. However, I have a fully functional RatRig Vminion running on a SKRat 1.0 and would now like to run the Configurator as I was thinking of changing my config for cooling with a 40*28mm fan, but as I said the Configurator tool does not work in RatOS