The basic issue is that I've been unable to install the UOP via Wrye Bash because when I click Install on the Wrye Bash context menu I get the following error: Extraction failed: 7z.exe return value: 7. Details follow:
I've recently completed a clean installation of Oblivion: GOTY Steam Edition. After installing the game via the Steam installer I also installed OBMM, OBSE, Wrye Bash and BOSS. I've launched Oblivion and made a savegame file, and the game appears to be working and stable so far.
My next step would be to install the Unofficial Oblivion Patch using Wrye Bash, and this is where I'm running into problems.
This is my first attempt at doing a BAIN installation - up to now I've always used OBMM or manual installation for mods. I'm using an Acer laptop that's running Windows 10. All files are installed on the C: drive and not in the Program Files directory. Here are the steps I'm taking: