Joined just to say Stuartspink is right. My adapter and filters were sticking out just a bit too far towards each other and not allowing the wheel to spin. It would've been nice to get a message to that effect instead of crashing, but it was only a quick search to find this so not too bad.
So far really enjoying the kStars/Ekos/INDI on my Mac and RPi4, thank you devs!