Ok, so i install FCOM and such and it doesn't work. I end up deleting, reinstalling Oblivion in it's entirety (Deleting the folder after uninstalling Oblivion) then finding out i'm missing part of franscescos mod. That didn't help, nothing. so Now i've deleted, reinstalled fresh again. This time only installing OOO...and i get a "this program has stopped responding" message upon launch.

Help?

(Load Order)

Oblivion.esm
Oscuro's_Oblivion_Overhaul.esm
Kvatch Rebuilt.esm
Magicka Regen x8.esp
All+5AttributeModifiers.esp
Ayelid Wells.esp
Blackmarket.esp
za_bankmod.esp
Crowded Roads.esp
GTAesgaard.esp
TOTF.esp
GlenvarCastle.esp
Kvatch Rebuilt - OOO Compatibility.esp
Oscuro's_Oblivion_Overhaul.esp
Kvatch Rebuilt.esp
The Lost Spires.esp
BrotherhoodRenewed.esp
VHBloodlines 1.2.esp
Natural_Weather_by_Max_Tael.esp
Natural_Habitat_by_Max_Tael.esp
Natural_Vegetation_by_Max_Tael.esp
Natural_Water_by_Max_Tael.esp
Shadowcrest_Vineyard.esp
P1DkeyChain.esp
HoarfrostCastle.esp
OblivionMageTower.esp
MidasSpells.esp
bartholm.esp
Return Of Shadows.esp
Hunter Mod.esp
More_and_cheap_training-8523.esp
The_Tower_of_the_Lich_King-4492.esp
Carry_all_you_want-5118.esp

Doesn't seem like "only OOO" to me. As for OOO, make sure you're using http://www.gamesas.com/index.php?/topic/1159634-relz-oscuros-oblivion-overhaul-133/. Try unchecking everything but OOO and see if that works. If it does, go from there but only add a couple of mods at a time. "this program has stopped responding" sounds hardware/driver related btw - messed up mod installs usually leads to CTD on start, other CTD's, missing meshes etc.

I've tried that, actually. I've tried just Oblivion.esm, i've tried just OOO, i've tried everything without OOO, none work. And my game was working fine until I installed FCOM/OOO. So now i'm not sure what's going on.

Ahh fixed the problem. Googling around I finally find "delete your Oblivion.ini file in the my games/oblivin folder. It may be corrupted" Delete. Launch game with everything checked...and voila, loads right up. Fixed!