I'm a bit late to the game, having just gotten Oblivion a couple weeks ago (GOTY edition, includes Knights of the Nine, Shivering Isles, and latest patch). I'm also obsessive enough to not want to start playing the game until I have all the mods I may want to use in place, so that I don't have to go back later and restart or mess with problems with characters and save games. So, I spent some time researching various mods and how to use them, put together my list, and set them up. The only problem is that when I launch Oblivion, it briefly goes to a black screen, and then crashes to desktop before even getting so far as the "Bethesda" logo screen. I've activated and deactivated my mods to find the troublemakers, and it seems that there are three mods, any of which will cause a CTD if activated. These are: Kvatch Rebuilt 1.1 Quest Award Leveller 2.1.0 Oscuro's Oblivion Overhaul COMPLETE 1.33 - seems to only cause a problem when the Harvest Flora option is installed Any one of these three by itself will cause a CTD, the problem is I don't know which other mods they may be conflicting with. The Kvatch mod is pretty low priority for me, it sounded interesting, but if I can't get it to work, no big deal. I'd like the Quest Award Leveller to work, but it isn't critical. I'd really like to get OOO working though, but it seems that if I have to, I can just run it without Harvest Flora, although it could be a bit of a pain. Anyway, here is the list of mods I am attempting to use. If anyone knows of an obvious conflict or a potential solution, I'd appreciate some input. Loaded with OBMM: Akatosh Mount By Saiden Storm 1.9 All_In_One_Basement_7_OMOD-2556 Armory Lab 4.1 Bag of Holding 1.5.0 Bedrolls 1.1 Companion Postal Service 1.01 Companion Share Recruit 3.23 Cyrodil Terrain Map v25 DarNified UI 1.3.2 Dude Where's My Horse FINAL 100.0 Akatosh Mount Earn the Wyrm 1.0 Frostcrag_Reborn_OMOD-9769 Horse_Commands_Revamped_13 House Map Markers v 1.4 Keychain 5.0 Kvatch Rebuilt 1.1 Menu Escape 0.7.1 No Psychic Guards v1.2 Ranokoas Organized Potions 1.0 Oscuro's Oblivion Overhaul COMPLETE 1.33 Cheydinhal Pet Shop 1.7 Quarl's Texture Pack III 1.3 Quest Award Leveller 2.1.0 Bravil Sea Domes 1.1 Ranokoas City Stealth Exits 2.0 Streamline 2.1 Toggleable Quantity Prompt 3.1.1 Ranokoas Undercover Overhaul 2.0 Unofficial Oblivion_Patch_v3_2_0_OMOD_Version-5296 Unofficial_Oblivion_Mods_Patch_v15_OMOD_Version-9969 v1_4_0_OMOD_version-10739 (Unofficial SI Patch) Manually Installed: OBSE AF Level Mod 2.8.7 I also ran BOSS to try to optimize my load order, and this is what it came up with: I used this order, and deactivated the Frostcrag Unofficial Patch as it suggested, but I still get the same CTD on startup. I'll keep looking for solutions, but if anyone has some insight into this, it would be a big help. Thanks in advance!