You know, I've been a long time Unity user and it taught me to make backups on every major change to the project (which is SAD), however, what happened today is really a new level. You see, I had my Unity project open in the editor on a 24/7 running PC for a day +/- few hours. It was in play mode most of the time, because I was testing the server backend and the Unity project was, obviously, the client. At some point I saw some strange warnings in yellow, but the Unity project ran just fine and everything worked okay. And before you say anything, those warnings were something about "session failed" something, quite sure it had something to do with the Unity editor itself, which again brings us to the question of what was going on with it? Cause I certainly did NOT do anything to break my project. And consider that it did work in play mode right before I had to restart the editor, so from my end of things it was doing just fine. Then, as I said, I had to finally close the editor and reopen it. Instead of my project that I just closed there was nothing, moreover, all scripts like lost their references, when I open any script in VS, which worked fine before, I see it lost even the basic things - for example "using UnityEngine.UI" does nothing, all UI declarations are now shown as errors and so on. In the editor all objects lost everything on them, I mean ALL scripts on every object are gone and instead of those scripts have this same text: "The associated script can not be loaded. Please fix any compiler errors and assign a valid script". Yeah, right.. And the console looks like this (see attachment). So what is this? Engine partly crashed? The proverbial PC reset did nothing. What are my options here? Unity version for this project is 2019.2.10f1 - chose it hoping it'll be stable enough, silly me..