Project Crash upon Opening

Hi, I’ve been working on a project for a couple weeks now, and it all of a sudden won’t open. I noticed it crashed a couple times after deleting some assets in Wwise that I think had been integrated into UE4 as events. Please let me know what information I can provide to get this resolved.

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I’ve seemed to figured out the problem - the main map had a bug. However now when I go to build the light, I can no longer save the map with the light built. It says “the map cannot be saved as it is only partially loaded”. I also cannot take damage from my weapon.