Alright, so I've begun to experience a problem with Oblivion's shaders for summons. I'm not terribly sure exactly where the problem lies, though. When I summon creatures (or when an NPC summons creatures) the shader (I assume it is a shader) displays a blob of large white boxes that, rather than the intended effect.

This only seems to occur outside, in daylight (though I haven't extensively tested in nighttime--I will if it's important). It affects summons when they first begin to appear (though parts of the intended summon shader are visible where the white blob ends). It also rears its ugly head when the summons are simply walking about or casting spells.

Here is my modlist:

Active Mod Files:00  Oblivion.esm01  Francesco's Leveled Creatures-Items Mod.esm02  Francesco's Optional New Items Add-On.esm03  Cobl Main.esm  [Version 1.72]04  Oscuro's_Oblivion_Overhaul.esm  [Version 1.34]05  Mart's Monster Mod.esm  [Version 3.7b3p3]06  FCOM_Convergence.esm  [Version 0.9.9MB3]07  bookplacing.esm  [Version 1]08  Unofficial Oblivion Patch.esp  [Version 3.2.0]09  UOP Vampire Aging & Face Fix.esp  [Version 1.0.0]0A  DLCShiveringIsles.esp0B  Francesco's Optional Chance of Stronger Bosses.esp0C  Francesco's Optional Chance of Stronger Enemies.esp0D  Francesco's Optional Chance of More Enemies.esp0E  Francesco's Optional Leveled Guards.esp0F  FCOM_Francescos.esp  [Version 0.9.9]10  FCOM_FrancescosItemsAddOn.esp  [Version 0.9.9]11  FCOM_FrancescosNamedBosses.esp  [Version 0.9.9]12  Fran Armor Add-on.esp13  Fran_Lv30Item_Maltz.esp14  Better_Water-1830.esp**  Book Jackets Oblivion - BP.esp15  Cobl Bookjackets.esp16  ImprovedSigns.esp17  DLCHorseArmor.esp18  DLCHorseArmor - Unofficial Patch.esp  [Version 1.0.5]19  DLCOrrery.esp1A  DLCOrrery - Unofficial Patch.esp  [Version 1.0.3]1B  DLCVileLair.esp1C  DLCVileLair - Unofficial Patch.esp  [Version 1.0.5]1D  DLCMehrunesRazor.esp1E  DLCMehrunesRazor - Unofficial Patch.esp  [Version 1.0.4]1F  DLCSpellTomes.esp20  DLCSpellTomes - Unofficial Patch.esp  [Version 1.0.1]**  Book Jackets DLC.esp**  GrimbotsSpellTomes.esp21  DLCThievesDen.esp22  DLCThievesDen - Unofficial Patch.esp  [Version 1.0.5]23  DLCThievesDen - Unofficial Patch - SSSB.esp  [Version 1.0.4]24  Cobl Glue.esp  [Version 1.72]25  Cobl Si.esp  [Version 1.63]26  OOO 1.32-Cobl.esp  [Version 1.72]27  Bob's Armory Oblivion.esp28  FCOM_BobsArmory.esp  [Version 0.9.9]29  Loth's Blunt Weapons for Npcs.esp2A  FCOM_LothsBluntWeapons.esp  [Version 0.9.9]2B  Oblivion WarCry EV.esp2C  FCOM_WarCry.esp  [Version 0.9.9MB3]2D  Oscuro's_Oblivion_Overhaul.esp  [Version 1.34]2E  FCOM_Convergence.esp  [Version 0.9.9Mb3]2F  FCOM_EntropicOrderRebalance.esp  [Version 0.9.9beta2]30  FCOM_RealSwords.esp  [Version 0.9.9]31  FCOM_SpawnRatesSlightlyReduced.esp  [Version 0.9.9MB3]32  FCOM_SaferRoads.esp  [Version 0.9.9]33  Mart's Monster Mod - Safer Quest Locations.esp  [Version 3.7b3p3]34  Mart's Monster Mod - Dungeons of MMM.esp  [Version 3.7b3p3]35  Mart's Monster Mod - Hunting & Crafting.esp  [Version 3.7b3p3]36  Mart's Monster Mod - Farm Animals.esp  [Version 3.7b3p3]37  Mart's Monster Mod - Diverse WaterLife.esp  [Version 3.7b3p3f]38  Mart's Monster Mod - Slof Horses Complete.esp  [Version 3.7b3p3]39  FCOM_DiverseGuardUnity.esp  [Version 0.9.9]3A  FCOM_BobsGuardUnity.esp  [Version 0.9.9]3B  FCOM_HungersUnitySI.esp  [Version 0.9.9]3C  Mart's Monster Mod - Shivering Isles.esp  [Version 3.7b3p3]3D  OOO-WaterFish.esp  [Version 1.34]3E  MMM-Cobl.esp  [Version 1.69]3F  LetThePeopleDrink.esp  [Version 2.5]40  Mad Mike's Crypts of Cyrodiil.esp41  DLCBattlehornCastle.esp42  DLCBattlehornCastle - Unofficial Patch.esp  [Version 1.0.4]43  DLCFrostcrag.esp44  DLCFrostcrag - Unofficial Patch.esp  [Version 1.0.4]45  Knights.esp46  Knights - Book Jackets.esp47  Knights - Unofficial Patch.esp  [Version 1.0.9]48  The Lost Spires.esp49  FCOM_Knights.esp  [Version 0.9.9Mb3]4A  xulStendarrValley.esp  [Version 1.2.2]4B  xulTheHeath.esp4C  XulEntiusGorge.esp4D  xulFallenleafEverglade.esp  [Version 1.3.1]4E  LostSpires-Everglade patch.esp  [Version 1.2]4F  xulColovianHighlands_EV.esp  [Version 1.2.1]50  xulChorrolHinterland.esp  [Version 1.2.2]51  xulBeachesOfCyrodiilLostCoast.esp  [Version 1.6.4]52  xulBravilBarrowfields.esp  [Version 1.3.2]53  xulLushWoodlands.esp  [Version 1.3]54  xulAncientYews.esp  [Version 1.4.2]55  xulAncientRedwoods.esp  [Version 1.6]56  xulCloudtopMountains.esp  [Version 1.0.3]57  xulRollingHills_EV.esp  [Version 1.3.2]58  xulPantherRiver.esp59  xulRiverEthe.esp  [Version 1.0.2]5A  xulBrenaRiverRavine.esp  [Version 1.0.2]5B  xulImperialIsle.esp  [Version 1.6.5]5C  xulBlackwoodForest.esp5D  xulCheydinhalFalls.esp  [Version 1.0.1]5E  xulAspenWood.esp  [Version 1.0.1]5F  xulSkingradOutskirts.esp60  FCOM_UnofficialFranArmorAddon.esp  [Version 0.9.9]61  Salmo the Baker, Cobl.esp  [Version 3.08]62  Toggleable Quantity Prompt.esp  [Version 3.1.1]63  Quest Award Leveller.esp64  Quest Award Leveller - Battlehorn Castle.esp65  Quest Award Leveller - Vile Lair.esp66  Quest Award Leveller - Mehrunes Razor.esp67  Quest Award Leveller - Knights of the Nine.esp68  Enhanced Grabbing.esp  [Version 0.5]69  All+5AttributeModifiers.esp6A  bgMagicEV.esp  [Version 1.7EV]6B  bgMagicEVStartspells.esp  [Version 1.68EV]6C  bgMagicEVAddEnVar.esp  [Version 1.68EV]6D  bgMagicEVPaperChase.esp  [Version 1.68EV]6E  Bashed Patch, 0.esp

I think that it might be LAME that's changing the graphics, but I don't know for sure--and it seems to be a recently cropped up issue, though I haven't installed any mods recently sans the Oblivion crash prevention system, which I cannot imagine is causing the problem. No guarantees on that, though--it's possible I just wasn't around under the correct conditions in the past.

I have the same problem, similar mod list.

Also just installed crash prevention, and then noticed white blocks...