That's interesting because I've not heard of that happening with anyone else. That may make troubleshooting it difficult. Don't suppose there's anything else you think may be relevant? I would also ask if it happens if you started a new game, though I would understand if you don't want to abandon your run either.
Viewing post in Update Alpha 7: Desires Update comments
Started a new run (new game +) and it works fine now. My old save was a newly started new game+ at day 1 in camp. It seems that I could get the 4th time slot used caused the freeze. Might just have been a save compatibility issue. Think your alpha 7 post mentioned something about changed new game + stuff so maybe that broke it.