So I still cannot figure out how to get this to play. I followed the instructions for installation with oblivion from steam, and that didn't work, so I tried the suggestions that people gave here, and that still didn't work. The files that I'm supposed to check don't show up when I click on data files, and when I click them in the nehrim launcher, they don't stay checked after I try to uncheck the oblivion files, which always become checked again as soon as I uncheck them. I keep getting an application load error message or the oblivion launcher will show up and I can't click on anything.
I know there's probably something really obvious that I'm doing wrong, but I can't seem to figure it out, so I would really appreciate some help with this.