Game crashes upon loading gameplay test scene

Build only. Tried it in Editor and it works somewhat. I exit my title screen to my test map, and the game will just crash upon trying to load the next scene.

It only started to cause this today. I even updated to 5.6.1f1 from 5.6.0p3 hoping it would fix it. I'm on the latest Windows 10 update, Creators' update.

In Editor mode, I do get these two Assertion Failures though. I assume this has something to do with the build crashing.

EDIT: It's my character's Prefab causing this. Every time I attach her script onto the object with some AudioSources, and run the scene, it causes the Asserts. So something's wrong with the way I'm creating the prefab, because her model alone won't give me those errors.

EDIT 2: I got rid of the Assertion Failures by changing the Culling Mode of my character's Animator component to Always Animate. But I think the problem is that builds are borked in the latest release. I still can't access my scene in a build.

I attached the logs it spit out too.Logs