Has anyone managed to get this to work with GoG version? Was setting up mods for a friend who owns the GoG version and I cannot get Darnified UI to work correctly. Works perfect on the Disc version and Steam but not GoG? I installed it the exact same way on all three. I have also tried copy pasting from Disc version and Steam. Did GoG do something to mess up Darnified UI mods? Tried the regular and DarN versions of it.

I had the same issue at first. What seemed to be the cause was that the base-game .bsa files in the GoG installation have a more recent modification date than the files in Darnified UI, so they wind up taking precedence by default. What worked for me was to set the original .bsa files as last modified in 2001.

I run the game on macOS via Wineskin, so unless you are doing the same the commands I used would probably not be a help, but I imagine there may Windows equivalents or utilities that will do it for you. I used a web search to find the Mac commands.

I recently modded Oblivion for a new run. The only issues I ran into for Darnified was that I had to install it with OBMM rather than Wrye Bash, along with manually changing the font section in the oblivion.ini file. There were a few mods that I had that changed the same .xml files, so I had to watch for that.