Unity crashes when attempting to add any threads to A*

I’ll preface this by saying that I do not have the pro version of A*, so if that’s the problem just let me know. I’ve been encountering some behavioral issues from my zombie characters which are hooked up to the A* seeker objects, and I believe its because my pathfinding isn’t currently threaded. The documentation for the project states that free users are allowed a single thread for pathfinding, which I think will be all I need, though I’m not sure yet. Problem is, when I change the thread count in the A* settings from 0 to 1, the entire Unity editor locks up and crashes when I try to play it, even on simple empty scenes. Is there something wrong with my code base? Or am I trying to do something I’m not allowed to do?

That is definitely not right.
Could you post the exception or error you get when it crashes?

It’s not so much a crash as it is a lockup. Same kind of thing would happen when stuck in an infinite loop. I press the play button on Unity and leave, come back an hour later, and its still “loading” the scene. If I change the thread count back to zero it loads instantly.

Does anything of interest show up in the editor log?