To start, I have Windows XP 64 bit with 4GB ram. Oblivion is in a custom directory c:\Playthings\Oblivion. I have AVAST! and strangely Python 2.5 and 2.6. Major mods include OOO 1.33, Race Balancing Project, LAME, and Integration. I have also PyFFI'd and repacked the entire Oblivion - Meshes.bsa with PyFFI 2.1.6. Without any understanding of meshes and loading I ( wrongly ) suspect that a mesh is loading that crashes Oblivion.
Here is my complete load order from Wryebash:
Spoiler
? 00 Oblivion.esm
? 01 All Natural Base.esm [Version 1.0]
? 02 Oscuro's_Oblivion_Overhaul.esm [Version 1.33]
? 03 Unofficial Oblivion Patch.esp [Version 3.2.0]
? 04 DLCShiveringIsles.esp
? 05 All Natural.esp [Version 1.1]
? 06 All Natural - SI.esp [Version 1.0]
? 07 All Natural - Real Lights.esp [Version 1.1]
? 08 Living Economy.esp
? 09 Living Economy - Items.esp
? 0A Cutthroat Merchants.esp
? 0B skycaptains NPCFF.esp
? 0C DLCHorseArmor.esp
? 0D DLCOrrery.esp
? 0E DLCVileLair.esp
? 0F DLCMehrunesRazor.esp
? 10 DLCSpellTomes.esp
? 11 DLCThievesDen.esp
? 12 Oscuro's_Oblivion_Overhaul.esp [Version 1.33]
? 13 OOO-Water_Weeds.esp [Version 1.33]
? 14 OOO-Map_Markers_Stock.esp [Version 1.33]
? 15 OOO-No_Guild_Ownership.esp [Version 1.33]
? 16 Bandit Hideouts.esp
? 17 Fort Falkenshire.esp
? 18 Fort Krakatus.esp
? 19 Fort_FerrionV11.esp
? 1A FortDragonShirev1.esp
? 1B Torynwyll.esp
? 1C Vassoul11.esp
? 1D DLCFrostcrag.esp
? 1E Knights.esp
? 1F Harvest [Flora].esp [Version 3.0.0]
? 20 Harvest [Flora] - Shivering Isles.esp [Version 3.0.0]
? 21 Harvest [Flora] - DLCVileLair.esp [Version 3.0.0]
? 22 Harvest [Flora] - DLCFrostcrag.esp [Version 3.0.0]
? 23 Respawning Varla & Welkynd Stones.esp
? 24 Toggleable Quantity Prompt.esp [Version 3.2.0]
? 25 kuerteeAttributeAndSkillBasedDamageModifiers.esp
? 26 Level_Rates_Modified_x2.esp
? 27 RealisticLeveling.esp
? ++ bgBalancingEVOptionalSeamReducerHighElfFix.esp [Version 10.0EV-D]
? ++ bgBalancingEVOptionalFangs.esp [Version 10.0EV-D]
? 28 bgBalancingEVCore.esp [Version 10.52EV-D]
? 29 bgMagicEV.esp [Version 1.7EV]
? 2A bgMagicEVPaperChase.esp [Version 1.68EV]
? 2B bgBalancingEVLAMEAddition.esp [Version 10.51EV-D]
? 2C bgIntegrationEV.esp [Version 0.993]
? 2D bgMagicLightningbolt.esp
? 2E OOO-Magic_Script_Effect_Fix.esp [Version 1.33]
? 2F Mouth of the Serpent.esp
? 30 Bashed Patch, 0.esp
? ++ Cute Orc Head Replacer 1.1 for OOO 1.33.esp
? 00 Oblivion.esm
? 01 All Natural Base.esm [Version 1.0]
? 02 Oscuro's_Oblivion_Overhaul.esm [Version 1.33]
? 03 Unofficial Oblivion Patch.esp [Version 3.2.0]
? 04 DLCShiveringIsles.esp
? 05 All Natural.esp [Version 1.1]
? 06 All Natural - SI.esp [Version 1.0]
? 07 All Natural - Real Lights.esp [Version 1.1]
? 08 Living Economy.esp
? 09 Living Economy - Items.esp
? 0A Cutthroat Merchants.esp
? 0B skycaptains NPCFF.esp
? 0C DLCHorseArmor.esp
? 0D DLCOrrery.esp
? 0E DLCVileLair.esp
? 0F DLCMehrunesRazor.esp
? 10 DLCSpellTomes.esp
? 11 DLCThievesDen.esp
? 12 Oscuro's_Oblivion_Overhaul.esp [Version 1.33]
? 13 OOO-Water_Weeds.esp [Version 1.33]
? 14 OOO-Map_Markers_Stock.esp [Version 1.33]
? 15 OOO-No_Guild_Ownership.esp [Version 1.33]
? 16 Bandit Hideouts.esp
? 17 Fort Falkenshire.esp
? 18 Fort Krakatus.esp
? 19 Fort_FerrionV11.esp
? 1A FortDragonShirev1.esp
? 1B Torynwyll.esp
? 1C Vassoul11.esp
? 1D DLCFrostcrag.esp
? 1E Knights.esp
? 1F Harvest [Flora].esp [Version 3.0.0]
? 20 Harvest [Flora] - Shivering Isles.esp [Version 3.0.0]
? 21 Harvest [Flora] - DLCVileLair.esp [Version 3.0.0]
? 22 Harvest [Flora] - DLCFrostcrag.esp [Version 3.0.0]
? 23 Respawning Varla & Welkynd Stones.esp
? 24 Toggleable Quantity Prompt.esp [Version 3.2.0]
? 25 kuerteeAttributeAndSkillBasedDamageModifiers.esp
? 26 Level_Rates_Modified_x2.esp
? 27 RealisticLeveling.esp
? ++ bgBalancingEVOptionalSeamReducerHighElfFix.esp [Version 10.0EV-D]
? ++ bgBalancingEVOptionalFangs.esp [Version 10.0EV-D]
? 28 bgBalancingEVCore.esp [Version 10.52EV-D]
? 29 bgMagicEV.esp [Version 1.7EV]
? 2A bgMagicEVPaperChase.esp [Version 1.68EV]
? 2B bgBalancingEVLAMEAddition.esp [Version 10.51EV-D]
? 2C bgIntegrationEV.esp [Version 0.993]
? 2D bgMagicLightningbolt.esp
? 2E OOO-Magic_Script_Effect_Fix.esp [Version 1.33]
? 2F Mouth of the Serpent.esp
? 30 Bashed Patch, 0.esp
? ++ Cute Orc Head Replacer 1.1 for OOO 1.33.esp
What initial steps would you take if you were in my position? Perhaps I won't have to go through each and every mod. Oh, I have not cleaned any of these mods with TES4 Edit.