Ableton Forum

Idonotlikebroccoli wrote:^ I've also experienced problems with both Live 9.1.6 and 9.1.7b3, and submitted crash reports.

Is there a 9.1.5 download available?

Ask Ableton support to give you one. I'm not certain they will but they're usually nice. If nothing else I'd assume it would be helpful to them to learn that a problem you reported doesn't happen in 9.1.5. Personally, I keep the previous installation around until I know the current is problem free. I also use the beta separately. Usually betas are totally problem free for me.

I got in touch with Ableton support, and it seems like resetting Live did the trick for me: https://www.ableton.com/en/articles/reset-live/