Basically, I wanted a double bed in my waterfront shack (otherwise I couldn't sleep at the same time as my companion).
So I use the construction set to add one, making a couple of other adjustments to the shack to make room.
After saving it, I activate it and play Oblivion.
When I try and load my save however, the game crashes.
My first thought was that it was a conflict. After I removed all mods except the bed one, it seemed that it wasn't the case.
Anyone know why this is happening?
Cheers.

Load Order:
Oblivion.esm
Oscuro's_Oblivion_Overhaul.esm
Toaster Says Share v3.esm
Unofficial Oblivion Patch.esp
UOP Vampire Aging & Face Fix.esp
LoadingScreens.esp
Natural_Weather_with_darker_Nights_by_Max_Tael_RD.esp
Natural_Habitat_by_Max_Tael.esp
PCSoundInnocent.esp
Living Economy.esp
Living Economy - Items.esp
CapesandCloaks.esp
RTFemaleReplacerV12.esp
ScimitarMod.esp
Oscuro's_Oblivion_Overhaul.esp
OOO-Water_Weeds.esp
OOO-Map_Markers_Stock.esp
OOO-DLT_Remover.esp
OOO-Armor_Perks_WearRate_Repair.esp
OOO-BirthSigns.esp
OOO-Combat_Skills_Perks_Marksmanship.esp
OOO-DaedraLord_Quests.esp
OOO-Dangerous_Traps.esp
OOO-Deadly_Combat.esp
OOO-DLT_Immersion.esp
OOO-Magic_Effects+Enchantments.esp
OOO-Magic_Effects+Spells.esp
OOO-Magic_Game_Settings.esp
OOO-Potions.esp
OOO-Container_Trap_Instant_Effects.esp
LoadingScreens-OOO.esp
Cheydinhal Petshop.esp
24HrArenaAliveV2Towers.esp
Natural_Vegetation_by_Max_Tael.esp
gardening.esp
Quest Award Leveller.esp
Alternative Start by Robert Evrae.esp
MidasSpells.esp
No psychic guards v1.2.esp
RenGuardOverhaul.esp
Deadly Reflex 5 - Timed Block with no damage or durability changes.esp
DeadlyReflex 5 - Combat Moves.esp
OOO-Level_Normal.esp
actors_in_charge.esp
tkHairPack01.esp
_Ren_BeautyPack_full.esp
Toaster Says Share Faction Recruitment.esp
1em_Vilja.esp
OOO-Respawn_Week.esp
OOO-Magic_Script_Effect_Fix.esp
Streamline 3.1.esp
not_recruit_companions.esp
Unofficial Oblivion Patch Sup.esp
Andrews_No_Quest_Items-6729.esp
Fall hair 1+2 V.3.esp
Practical Umbra.esp
Merged Hair.esp
Custom-vilja1.esp
Hair Merge Plugin.esp
Duke Patricks - BASIC Script Effect Silencer NIF REMOVED.esp

The waterfront shack is scripted and set up with parentage.

If you deleted things, then that is the problem.

If you don't want something to show up, just move it outside the walls.

Thanks, I moved the bed instead of deleting it, and it worked fine.
Except I forgot about the fact that my companion was sleeping on the bed I moved :facepalm:
Thanks a bunch WillieSea, and this topic can now be closed.