Basically, the game will crash after just a few loading screens around cities (the wilderness seems to be fine). Open Cities and Better Cities both seem to trigger this problem. I was also having issues with the UOP earlier, though those seem to have gone away for now.
Spoiler
Active Mod Files:00 Oblivion.esm01 Open Cities Resources.esm [Version 3.5.6]02 Unofficial Oblivion Patch.esp [Version 3.3.3]03 Book Jackets Oblivion.esp04 Mage_Guild_Teleport.esp05 Dynamic Map.esp [Version 2.0]06 Cyrodiil Travel Services.esp [Version 2.0.3]07 xuldarkforest.esp [Version 1.0.5]08 xulStendarrValley.esp [Version 1.2.2]09 xulTheHeath.esp0A XulEntiusGorge.esp0B xulFallenleafEverglade.esp [Version 1.3.1]0C xulColovianHighlands_EV.esp [Version 1.2.1]0D xulChorrolHinterland.esp [Version 1.2.2]0E xulBeachesOfCyrodiilLostCoast.esp [Version 1.6.4]0F xulBravilBarrowfields.esp [Version 1.3.2]10 xulLushWoodlands.esp [Version 1.3.1]11 xulAncientYews.esp [Version 1.4.3]12 xulAncientRedwoods.esp [Version 1.6]13 xulCloudtopMountains.esp [Version 1.0.3]14 xulArriusCreek.esp [Version 1.1.3]15 xulPatch_AY_AC.esp [Version 1.1]16 xulRollingHills_EV.esp [Version 1.3.2]17 xulPantherRiver.esp18 xulRiverEthe.esp [Version 1.0.2]19 xulBrenaRiverRavine.esp [Version 1.1]1A xulImperialIsle.esp [Version 1.6.6]1B xulBlackwoodForest.esp [Version 1.1.0]1C xulCheydinhalFalls.esp [Version 1.0.1]1D xulAspenWood.esp [Version 1.0.2]1E xulSkingradOutskirts.esp [Version 1.0.1]1F xulSnowdale.esp [Version 1.0]20 xulCliffsOfAnvil.esp21 Open Cities Reborn - Full Merge.esp [Version 0.8]22 OCR+ULCH Patch.esp [Version 1.0]23 OCLR+ULBWForest Patch.esp [Version 1.0.2]24 OC+Cheydinhal Falls Patch.esp [Version 1.0.1]25 OC+ULSkingradOutskirts Patch.esp [Version 1.0]26 Oblivion XP.esp** Open Cities Reborn Road Record.esp27 Bashed Patch, 0.esp
I'm running Wrye Bash 2.91, OBSE v19, REAVWD, an LOD enhancer as well as Bomrets Texture Pack.
I'm puzzled to whats going on as I'm not dealing with anything that has caused problems before. I've got a bucket load more testing a diagnosing to do at the moment, but if anyone has any ideas that could help me it would be really appreciated.