@gee, thanks for your help!
Indeed, the NKitExtractionApp runs, however, when trying to use it, the error I mentioned occurs.
I use xonsh as my user shell and bash as my system one.
The CLI tools worked when they were called by bash, but not in xonsh. Maybe it's something related to some xonsh command, which it interprets differently from bash.
Anyway, now I can use CLI tools and there is only this little problem in the NKitExtractionApp.
Pinned Comments
gee commented on 2020-08-23 10:41 (UTC)
NOTE: For those using this with the Dolphin emulator, it may be better to use RVZ instead of Nkit: https://dolphin-emu.org/blog/2020/07/05/dolphin-progress-report-may-and-june-2020/