The game filesystem failed to initialize, aborting now.

[Jungo]

After I went from 1.42 beta back to 1.41 the game instead of launching threw in error: "The game filesystem failed to initialize, aborting now"
I reinstalled the game twice. The only things that work are either turning off real time protection in windows antivirus or writing down to launch options: -homedir "C:\Users\xxxx\Documents".
Though it's not a complete solution to my problem since I still can't use for example TruckersMP launcher because it throws the error at me again.
The second time I uninstalled the game I deleted all the files associated with ETS2 only backing up profile data on a different drive. I also fully uninstalled TrucksBook and reinstalled TruckersMP.
What should I do now?

[Some newbie driver]

If it works turning off real time protection won windows craptivirus it means that this craptivirus is blocking the load of some files by the game during the startup. Look for its activity logs to see what appears there.

Regards