Unity Crash since February

Good day,

I’ve been working on my game for quite a long time now and I’m pretty used to unity by now.
But recently, when I started my game, all my objects went purple, my terrain went missing and in the project folder, I wasn’t able to click a single thing. When I expanded a folder, all the other folder in the map expanded too. If I want to click a file in my project folder, all the other files will go blue and I’m not able to do anything with it.
I hope any of you know what I mean, I’ll upload a screenshot of my unity.
If anyone familiar with errors still doesn’t know where I’m talking about, please contact me and I’ll try to explain it more detailled.

Thanks in Advance,

Gozer007

I’ve had this happen to me once. It was a corrupted file as far as anyone could tell me. I had to revert to an earlier export and rebuild what I’d done since. I had terrible back up practices before that, not anymore. I hope this isn’t what’s happened to you and you find a nicer solution, but it sounds exactly the same, I especially remember not being able to select things and the entire hierarchy expanding

Unfortunitly I had this happen to me today, but I have a backup as of about 13 days ago, and my code is ok .

So not that big of a loss