Hi Arthur,
First option I’d recommend, is cancelling (or, stopping the installation task manually in the Applications tab of Windows Task Manager), restarting your computer, and running the installer again.
There are other options, but I would start with that.
Please post back with your results.
I uninstalled and installed again 2x yesterday. But today i turned my PC on and tried this solution, and it worked! I’ll just check if the tuning/sound eq works properly