unity just crashed and I lost a couple days worth of work bc the files are corrupt now I have to rebuild it so if it isn't good then that is the reason

Tarodev made a neat little unity autosave script (https://github.com/Matthew-J-Spencer/Tarodev) 

Video here w/ explanation: 

F

Since there is the open source requirement I highly recommend learning git/github, it could help prevent this from happening again.