Before apply any mod:
1. Do BSA redirection via OBMM or Wrye Bash or install 'ArchiveInvalidation Invalidated'.
2. Check file date(especially for all bsa files). I once heard the timestamp of the game bought from GOG is 'weird'. You may need to edit file timestamp with some external utilities.
Okay so I installed archiveinvalidation invalidated,reinstalled BTmod,didn't work,maybe I'm missing something with this step?
Also I read up on that timestamp being weird thing,the fix for that is setting oblivion.bsa-s timestamp to something like 1.1.2000,turns out oblivion.bsa's timestamp is already exactly that.
I ran BOSS as well and it doesn't even see that BT mod is installed even though I did install it multiple times.
The ArchiveInvalididation Invalidated method is old probably not reliable either, so I wouldn't recommend using that method.
If I were you I would only use Wrye Bash and I know one can install UI mods e.g BTmod, DarN UI (plus various versions of the original mod) via BAIN in Wrye Bash.
Personally, I perfer to only use Wrye Bash for all mods I use in Oblivion, but I find OBMM a lot better when I install Gothic251's DarkUId DarN mod and I don't want to play without a UI mod. So, the DarkUId DarN mod is an exception as I need to use OBMM due for better scripting.
Remember, BOSS cannot detect UI mods like BT Mod or DarN UI, because none of these UI mods has an esp. That's why you don't see the BT Mod in BOSS when sorting your loadorder.
Edited by leonardo2, 18 December 2018 - 10:19 AM.