Cannot create project with old Unity version

Unity Engine
1

Hi,
I am trying to create a project using Unity 2020.3.30 LTS because one of my internal plugins only worked with that version. I’m using the latest Unity Hub Version 3.3.0 on a Mac Monterey 12.5. I’ve installed both the latest Unity 2021.3.12.f1 LTS and Unity 2020.3.30 LTS from the Archive (I need the latest version for other projects besides this one). When I was creating the project, it opened a blank Unity window and it was processing something indefinitely. But when I tapped on it, it didn’t open any Window. I’ve even minimized all the other windows, and it still didn’t show anything. So I closed that Unity because it has run for a pretty long time. But when I opened the project, it is not valid. there’s only Temp and Logs folders in it.

Can anybody help me with this?

Thanks.

2

if nothing else works, create project folder manually
YourProject/
and add Assets/ folder inside it (so unity thinks that its a valid project)

then should be able to open that project (in hub “Open”)

3

I think maybe you need also the ProjectSettings file…

OP, make this empty directory structure:

MyNewSooperGame/Assets
MyNewSooperGame/ProjectManager```

and tell Unity Hub to open ```MyNewSooperGame```

It will complain and ask you for versions, so just clickety-click to answer those questions.
4

Thanks for the suggestions guys. I’ve tried it and it is still failing. It suggested to run the diagnostics and this is the result:

5

Kinda sounds like maybe something went wrong at install time… did you try reinstall?

6

You’re right. After I reinstalled the old Unity, it worked now. Thanks.