I'd highly recommend using Dodi instead. I dont know what causes it, but FitGirls installers have been doing this for years. There are some steps that can fix it, but its very inconsistent. Meanwhile, I havent had a Dodo install fail.
If you'd really prefer FitGirls repacks you can run the installer in a Windows VM and move the files to the host.
Better UI and many of the tools for managing wine prefixes are higher quality, rather than relying on something like Winetricks, which is actually a 20000 line bash script.