So the crash first happened when I placed down an encased fan and tried to pick it up again, trying to break the block with wrench/drill or pickaxe/axe seems to have made my game crash, so I blew it ...
Load up Create 1.17.1 (0.4) with Corruption (Java) 1.17.1 (1.0) Make a world Place a shaft, cogwheel, creative motor, large cogwheel ect.