Sometimes when I press the cast key, the player plays the spell casting animation, and a sound is made, but no spell comes out and no magicka is spent. it only happens sometimes, but it can be quite hindering in the middle of combat. has anyone else had this problem? thanks for the help.

here is my load order: Oblivion.esm
ScreenEffects.esm
CyrodiilUpgradeResourcePack.esm
Armamentarium.esm
Open Cities Resources.esm
CURP_Controller.esm
CustomSpellIcons.esm
HorseCombatMaster.esm
Harvest[Containers].esm
TNR ALL RACES FINAL.esp
TNR - ShiveringIsles.esp
Unofficial Oblivion Patch.esp
UOP Vampire Aging & Face Fix.esp
Oblivion Citadel Door Fix.esp
DLCShiveringIsles.esp
Atmospheric Loading Screens - Random Quotes.esp
Natural_Weather_HDR_by_Max_Tael_RD.esp
Natural_Habitat_by_Max_Tael.esp
Enhanced Water v2.0 ND.esp
Regrowing Nirnroot - Dissappear Reappear.esp
Symphony of Violence.esp
KDDwemerSpectacles.esp
Drum_Fix.esp
LightningStrikes.esp
SnakeLightningSpeed.esp
WindowLightingSystem.esp
AliveWaters.esp
AliveWaters - Koi Addon.esp
AliveWaters - Slaughterfish Addon.esp
KoldornsImprovedLava2.esp
bgMagicEV.esp
bgMagicEVAddEnVar.esp
Akatosh Mount By Saiden Storm.esp
ChaseCameraMod.esp
CNRP Cheydinhal.esp
CNRP Brumav02.esp
CNRP Chorrol.esp
Display Stats.esp
Luchaire's Neck Seam Concealer.esp
Musical Immersion 1.0.esp
QZ Easy Menus.esp
P1DseeYouSleep.esp
Raestloz Auto Reset Emotion.esp
Spell Delete And Item Remove.esp
Tc2rPoisonsOfNamira.esp
Living Economy.esp
Living Economy - Items.esp
Cutthroat Merchants.esp
HouseMapMarkersOnlyBought.esp
MaleBodyReplacerV4.esp
EVE_StockEquipmentReplacer.esp
Banes Guilds United.esp
Alluring Potion Bottles v2.esp
ClassyClothingCompendium.esp
Lockbreaker.esp
PEDress.esp
AT2 01-Shiki Armor Set.esp
AT2 02-Shiki Armor Set.esp
Colourwheels sixy Stock Armor & Clothing Replacer.esp
ArmamentariumLL.esp
ArmamentariumLLMagic.esp
ArmamentariumArtifacts.esp
ArmamentariumLLArmaVendor.esp
kuerteeWanderingEncounters.esp
Lock Bash Omega.esp
KvatchRising.esp
Ushnar's Re-Skinned Hound.esp
24HrArenaAliveV2Towers.esp
The Lost Spires.esp
OCC-Lost Spires-Patch.esp
MannimarcoRevisited.esp
ElsweyrAnequina.esp
ElsweyrAnequina - Races HGEC-Robert.esp
Open Cities New Sheoth.esp
Open Cities Anvil.esp
Open Cities Chorrol.esp
Open Cities Leyawiin.esp
Natural_Vegetation_by_Max_Tael.esp
Harvest [Flora].esp
Harvest [Flora] - Shivering Isles.esp
Harvest[Containers] - Vanilla - Ore Respawn.esp
Harvest[Containers] - SI - Ore Respawn.esp
Auto Repair.esp
BlackScreenSneakFix.esp
DwemerSpecsEquip.esp
Dungeon Actors Have Torches 1.6 DT.esp
Anti-amulet cover.esp
1SB_RavenousEleganceOutfit.esp
UNKNOWNYMOUS Social NPCs.esp
Adonnays Classical Weaponry.esp
Quest Award Leveller.esp
Dark BrotherHood Hood Replacer V1.4.esp
QQuix - Rock, rock, rock your ship - V3.esp
RealisticFatigue.esp
RealisticHealth.esp
RealisticForceMedium.esp
RealisticMagicForceLow.esp
Chargeable Spells by grmblf.esp
NollesMadnessPortalT2.esp
AgarMoreVariedSpellEffects.esp
MidasSpells.esp
Poison FX.esp
Lightweight Potions.esp
EnchantmentRestore.esp
EnchantmentRestore_Wells.esp
Corean_hair_for_Original_race.esp
Moonshadow Elves - Sc.esp
X.Races.Comp.esp
DS Flaming Arrows.esp
Banes DB Mask Placer True.esp
NoMerchantBarterpvssyr.esp
English Silent Voice Fix.esp
Banes Blade of Woe Replacer.esp
ScreenControls.esp
FormID Finder4.esp
BubbleFx.esp
HeavenStoneNirn.esp
SM Combat Hide.esp
Unequip Broken Armor.esp
Kobu's Health Modifier Mod.esp
Kobu's Cure for Fatigue Mod.esp
Kobu's Lighter Backpack Mod.esp
LightVWD.esp
PlaySpecial - OBSE and SoundCommands Required.esp
Demonized.esp
sycHearNoEvil.esp
Distant Chapel Bells.esp
ln.esp
kuerteeCrimeHasWitnesses.esp
Enhanced Grabbing.esp
[GFX]_Initial_Glow-self.esp
ReneerNPCSneakMod.esp
ReneerKeyLockMod.esp
SM Hand Combat.esp
bgBalancingEVCore.esp
bgMagicEVShader.esp
bgMagicShaderLifeDetect.esp
bgMagicEVNoSummonGlow.esp
EVE_KhajiitFix.esp
LTDVampireOverhaul.esp
kuerteeCleanUp.esp
Tougher Regen Settings.esp
1em_Vilja.esp
1em_Vilja_as_Moonshadow_Elf_Stranger.esp
Auto Potion Homebrew.esp
Oblivifall - Ambiant Dungeon SFX.esp
TWSAS.esp
WeaponAndStaffSpecs.esp
PTDamageFinal.esp
PTActorsCare.esp
SkillSpecialization.esp
Open Cities Skingrad.esp
Spells Be Effective.esp
Oblivion XP.esp
cancelattack.esp
Mayu's Animation Overhaul.esp
Bashed Patch, 0.esp
Duke Patricks - Near Miss Magic And Arrows Alert The Target.esp
Duke Patricks - Actors Can Miss Now.esp
Duke Patricks - Fresh Kills Now Alert The NPCs.esp
Duke Patricks - Follow That Actor.esp
Duke Patricks - Combat Archery.esp
FearsomeMagicka.esp
Ragna Parry V2.esp
DeadlyReflex 5 - Combat Moves.esp