This is very, very weird. I had noticed this some days ago, but I thought it only happened once - instead, every time I try to load a game that was saved in an outside cell, I get an instant CTD when everything is loaded. If the game was saved in an inside cell, however, everything's fine and it loads correctly.

I'm using the latest MGE XE (no difference with the standard MGE, it still happens) and this is my current load order:

Morrowind.esmTribunal.esmBloodmoon.esmBloodmoon Landscape Overhaul 1.0.esmHavish.esmGDR_MasterFile.esmSG-MW-ecology-BM.esmH.E.L.L.U.V.A._Merchant_Containers.esmKalendaar_V1 - Eng.esmBook Rotate.esmMCA.esmMorrowind Patch 1.6.5 Beta (BTB Edit).esmPegas Horse Ranch v3.1.esmTexture Fix 1.8.esmCastleWars.esmTR_Data.esmTR_Map1.esmMorrowind Advanced.esmFaster-v10.espHold it - resource.espKhuul Expanded.espVurt's Solstheim Trees & Bushes Replacer.espA Bard's life - Spellsongs.espA Bard's life - basic.espCombat Moves.espAnimated Morrowind 1.0.espProtective Guards.espDeus Ex Machina - A Steampunkyish Mod.ESPAnimated_Morrowind - Expanded.espHavish - Reduced Interest Rates.ESPHold it - replacer.espUnleveled Creatures 2.0.espAnnastia V3.3.espWeatheredSigns.espBetter Bodies.espDagonFel_Well.espAduls_Advanced_Combat_Injury_Effects.espIlluminated Order v1.0.espLilarcor_v4-1.espDNGDR-GHD Patch.espIlluminated Order v1.0 - Bloodmoon Compatibility Extras.espNighttimeDoorLocks-LD 1.1a.espOJAI - Framerate Version.espVurt's Grazelands Trees.espWestly_Presents_Unique_Corprus_Stalkers.espWhat Thieves Guild.ESPNPC LCV Schedules 03.espRAKFaction0point75.ESPAnimated Morrowind II.espRealistic Combat.espVurt's Ashlands Overhaul.espCastleWars - Updates.ESPNo Trespassing ALL.ESPvgreetings-combined.ESPSleepers, Awake!.espAntares' Tribunal Main Quest.espDjangos Dialogue.ESPNPC LCV Locks.espTaddeus'BalancedArmors(light).espAduls_Advanced_Combat_Paths.espAduls_Advanced_Combat_Base.espdh_furn.espBalmora Un-Mod.espBoe_lich_particle.espdh_furn_stores.espLGNPC_NoLore_v0_83.espAld_Ruhn_TG_Devil_Tanto_Tweak.espTaddeus'BalancedWeapons.espLgnpc_SN.espLeFemmArmor.espRise of the Illuminated Lich.espUnique Banners and Signs.espClean Fall Damage.espSeyda Neen Docks and Haldershore Tribunal_Bloodmoon V1.1.espDulsya Isle.espKey Replacer Trib & BM.espGalsiahs Character Development.espStealth Enhancements-LD 1.5b (Tribunal).espImproved Lockpicking.espDodge Mod 1.2-WD (Enhanced-LD) (Tribunal).espKS_Stormrider.espVivec's Fate.espLothavor's Legacy.espVivec Expansion 2.0.espdracandrosvoice.espDB_Attack_Mod3.espThief's Disguise Kit.espabotGuars.espDisturb_the_dead.espWar_Against_the_Dark_Brotherhood.espCreatures.espGreat House Dagoth.espClean Role-Playing Classes, Stealthy Pack.espAK_PCClothier_Balmora.espLGNPC_GnaarMok_v1_20.espTC_SadrithMoraClosed.espLGNPC_AldVelothi_v1_20.espLGNPC_MaarGan_v1_20.espLGNPC_HlaOad_v1_32.espSuran_Underworld_2.5.espJuniper's Twin Lamps (1.1 Tribunal).espDW_assassination.espCM_Partners_3.0.espDwemer_Cyborgs.espVvardenfell Druglord.espCreatures Great House Dagoth Patch.espSkooma Anonymous.espBook Jackets - Morrowind.espScripted_Spells.espClean Morrowind_Cities_Unlocked.espOluhan V1.13.espDaedric Sorcery.espClean Morrowind_Bandits_Unlocked.espTravelingMerchants_v2.2.espconstance1_0.espWayfarer's Rest v1.21.espBigMod2 v2.0 RELEASE.espDirty Deeds.espMorrowind Crafting 2-1.espMorrowind Crafting Equipment.espVampire_Embrace.espAld Redaynia Extended.espNew Suran Extended 1.5.espClean Better Caldera.espBlood Lines I_BloodMoon.espVampire Realism II.espVampire Realism II - TB Add-On.espVampire Realism II - BM Add-On.espVampire Realism II - BL Patch.espVampire Realism II - VE Patch.espLeyawiin 1pt1.espClean Ultimate Morrowind Anti-Mod.espImproved Bartering.espEnhanced Detection.espBB Dark Brotherhood by Westly.espBB_Clothiers_of_Vvardenfell_v1.1.espSim-ManorAlpha.espLess_Generic_Bloodmoon.espThe Broken Drum 1.01.espNEDE v1.2.espGCD_SS_patch.espWestly's Master Headpack X.espThe_Vvardenfell_Libraries.espAld-Ruhn game of three cups.espGCD TEO compatibility patch.espH.E.L.L.U.V.A. Bountiful Books.espBounty Hunters 1.1.espKnock Knock Mod 1.2.espCamonna Tong's violence 1.2.espSG-MW-ecology-BM-plugin.espSpect Sorcery pt 1.esphorationpcenhanced12-ve.espUndeads arise from death 1.4 - T - B.espnpce_mwse_patch.espEnhanced Summoning.espKS_Julan_Ashlander Companion_1.3.espSoT_Order of Ascadia_V2.1.espGCD_BigMod2_patch.espLiving Statues of Malacath.espSOLcodebook.espFliggerty's Fleeing Fetchers.espTavernTime Vardenfell.ESPFightersGuildReanimation.espChariots.espClean Better Daedric.espH.E.L.L.U.V.A. Complete Weapons.espLGNPC_Aldruhn_v1_20.espLGNPC_Aldruhn_v1_20_suppl.espLGNPC_Pelagiad_v1_30.espTrouble at Sea.espLGNPC_TelMora_v1_20.espOil Flask 1.1.espLGNPC_Khuul_v2_20.espLGNPC_VivecFQ_v2_10.espClean Ebonheart Interior Expansion.espLGNPC_TelUvirith_v1_20.espLGNPC_SecretMasters_v1_30.espLGNPC_IndarysManor_v1_51.espLGNPC_Indarys_Manor_v1_45.espDN-GDRv1.espLess_Generic_Nerevarine.espClean To Serve Sithis_.espNPC Functionality.espLGNPC_VivecRedoran_v1_50.espLGNPC_PaxRedoran_v1_20.espLGNPC_SoulSicknessPatch_v1_00.espSwimming Realism.espbeware of pickpockets! 1.4.espEntertainers_Expanded.espBetter Telekinesis.espThe Latest, Greatest Housing Mod_GOLD.espHavish Mini Patch.espNew Argonian Bodies - Mature.espNew Khajiit Bodies - Mature.espNecromancy Realism.espAntares' Big Mod 5.espLess_Generic_Tribunal.espAdvanced Herbalism - TR & BM.espWanderers of Solstheim.espWeather Effects.espClean_AK_PCSmithy_v1.0.espClean THFFTribBM_FINAL.espAdvanced Lockpicking Beta.espDN_1st_Person_bodies.espDN_1st_Person_Armor.espTLM - Complete.espThief's Mask 1.2.espblackjack.espGo To Jail 3.5 - T B.espAdvanced Persuasion.espBalmora Expansion v1.4.espH.E.L.L.U.V.A._A.A._LIGHT 1.0.espBTB - Character.espBTB - Spells.espBTB - Alchemy.espBTB - Equipment.espBTB - Settings.espNasty Camonna Tong.espUnexpurgatedBarenziahv100.espXenn's Strict Factions.ESPEcoAdjCrime (Tresspass Edit).espClean Tales of Seyda Neen.espDread.espMW_Adv_Required (BTB Edit).espBetter Clothes Complete (BTB Edit).espSeekers Faction v2.0.espThe Tribe Unmourned (GHD).espchemwar.espThe Sable Dragon 1.5.espGet_Diseases_1_00.espImperial Employment Office.espImport Business the Merchant of Vvardenfell.espRectified Fines.ESPImproved Open Spell Balance-LD.espVoice Addons.ESPImproved Hand to Hand.espNorn Full.espImproved Trap Settings (Tribunal).espTo The Death.espsm_luckylockupadditions.espAntares' Big Mod 5 - MCA 6 - patch.espService_Requirements_V1.4.3 (BTB Edit).espSouth Wall.ESPSW_LivingCitiesofVvardenfell03-13Patch.espClean Welcome to the Arena!.ESPThe Holiday Mod.espP.R.E. v4.0 + Nudiy Greeting Expansion.ESPBlasphemous Revenants.espClean Tales of Tel Branora.espHavish - Scimitar Update + GCD (no MWE).espconstruction v1.04.espBetterMusicSystem_1.9.espPiratelords Trade Enhancements.espTLM - Ambient Light + Fog Update.espMashed Lists.esp

I am pretty sure this has to do with the Distant Land feature of MGE.
I am not a MGE expert though, and MGE questions should be directed to the MGE thread in the Mod forum so that they can help you.

It seems you're right. I just disabled Distant Land and the save loaded correctly. Now, if I were able to understand why it happens - I remember that some time ago I was still able to load games successfully.

Ask http://www.gamesas.com/index.php?/topic/1174576-morrowind-graphics-extender-mge/ to get the quickest reply.
I know it's a common problem, so the fix is likely easy.

not related to your problem, but there is a newer version,

http://arcimaestroantares.webs.com/antaresbigmod.htm

You should always save indoors especially if you have mods. There are less 'moving parts,' so to speak, for the game to remember.

This isn;t related to mods, but it is a problem with MGE. Ask in the current MGE thread for the solution.