I just noticed that all the standard keyboard shortcuts (Ctrl + Z, Ctrl + N, Ctrl + S etc.) appear to have stopped working on my Rhino 5 64 bit install:
Version 5 SR11 64-bit
They still work on the Rhino 5 32 bit and Rhino 6 WIP versions:
Version 5 SR11 32-bit
Work In Progress
Any ideas of what might cause this behaviour and how to fix it?
Best and thanks,