Toolbar layout lost every time I open Rhino

Hello - I’d try loading EvoluteTools from a different location first and see what happens - the EvoluteTools one will reset because it is in Program Files and that is not a location that can be written by Rhino. If you make a copy elsewhere and load that instead, it should behave - it could be that this is messing the layout of your other rui as a side effect.

-Pascal