Nonfunctional: All projects contain blank compilation errors with only the timestamps

Hi, I really need some help. I was rearranging file locations and trying to clear up some space and somehow broke the ability for Unity to operate on my laptop. The pictures of the errors and what’s happening are below.

Steps I’ve taken:

  • I’ve restarted my computer several times
  • I’ve completely uninstalled all editor versions and the unity hub (twice), including deleting all local app data for unity, emptying the temp bin, and clearing the keys in the registry.
  • I’ve started completely new projects, checked old ones that used to work, downloaded sample ones from unity learn just to make doubly sure that it’s not me being dumb.

My current theory is that this has to do with me clearing some data from a National Instruments folder. I’m new to programming and just read online that this is needed for .NET communication, but would this be why Unity keeps failing then?

This has all taken more than a few hours and I’m drawing up a complete blank on how to fix this if anyone has any suggestions, please. I’d really appreciate any insight.

Update: I’m able to make new scripts, objects, scenes, etc. but I can’t attach any script components to game objects because “the script class can’t be found”

Update #2: Checking the Editor logs shows that the Tundra build is failing, and the “93 items updated” matches the 93 errors that are shown. No idea what Tundra is, but that’s something to look at now!

Update #3: I’ve now additionally uninstalled some Windows updates and reinstalled them so the framework is running properly, but I did also download the .NET 5 on my own. The issue is still persisting




Hi, I want to update this in case anyone else stumbles upon this and has the same issue. If you try to open command prompt and it doesn’t open, we probably have the same issue. I uninstalled conda and that was causing an issue with the command prompt, which Unity uses for execution.
The fix for me was to delete the Command Processor AutoRun key in the registry, and then everything was functional.

The thread with the solution and a better explanation from another user: Unity Empty Errors on Every Project (Unity 2021.3.2f1)

The stackoverflow solution detailing how to remove the key if you’re unsure: crash - Cmd crashes with exit code 1 after uninstalling anaconda - Stack Overflow