Wizard: Incorrect Morrowind assets path autodetection
As seen in this image - https://cdn.discordapp.com/attachments/260443579908882434/419604877929349121/unknown.png
The directory automatically provided ends with /Morrowind. But it really needs to lead to Data files for OpenMW to correctly find Morrowind.esm and its associated files that are required for running the game. Even if the installation wizard correctly guesses where your Morrowind folder might be in, it won't work because of the wrong directory.
(RM-4336 from redmine: created on 2018-03-03 by DestinedTo Die, , closed on 2018-04-02 by Alexei Dobrohotov, duplicates #4254 (closed))