Unity not responding on opening scenes

My Unity (5.5.0f3) crashes every time I try to load scenes from my project. Other projects are fine, and I can open this project if I rename the scene files so it loads up with a blank new scene.

I've restored the scenes from backups from a few days ago and they're still crashing. I run no scripts that should be doing anything related to the editor as far as I know. https://puu.sh/thA40/b4d0900040.txt here is a link to my unity logfile, but I'm not very sure how to glean useful information from it.

I'd rather not have to recreate these scenes from scratch, but i'm currently stumped, so any help would be appreciated!