Alright, so here's the issue with Hybrid Corridors specifically. It's a game bug, not anything that I've done, alright. Since I'm using a component which blocks crew access on both sides of the armour triangle embedded in the hybrid, the crew want to go that place, but because they can't, the game doesn't know this is intentional and crashes. I've been meaning to talk to Walt about it for a while now, but due to the Hybrids being rather low down on my list, I haven't thought it necessary to do so.
And it's probably better to load the ship in BP mode instead of physically spawning it in, in the off chance you accidentally unpause.