Question In Ubuntu 20.04, I can't open the editor:

I can't open the editor because it said- "Your project was lasted saved with a different version of Unity." Any Suggestions are appreciated.

 

I think you can hit the continue button without any advice. Please read the documentation what the dialog means and make an inform decision if you want to upgrade your project to the new version. Also, always use version control system.

 

Ok, thanks, I'll try that now!

 

It didn't work-

 

It looks like you keep launching different editor versions. You will receive this message any time you open a project with a different Editor version than you last saved it. Your first screen shot was of 2020.3.3, now with 2021.1.2.

Generally you want to keep using the same Editor version with the project unless you specifically want to upgrade the project, since a new Editor version can deprecate old API's you may be using, or introduce new bugs or code errors. Unity supports project upgrades, but not downgrades, making it a 1 way trip, which is why this warning pops up. Always back up your project before doing such an upgrade.

 

Ok?