I've reinstalled with less mods (plus up-to-date versions of OOO and MMM), and i'm trying to create a custom class, but whenever i do the game crashes. here's a list of active mods:

MergeableFollowing mods are active, but could be merged into the bashed patch. ?  Harvest [Flora] - DLCVileLair.esp ?  Harvest [Flora] - Shivering Isles.esp ?  Mart's Monster Mod - Diverse Runeskulls Loot G&GD.esp ?  Mart's Monster Mod - Friendlier Factions OOO.esp ?  Mart's Monster Mod - Looting NPCs & Creatures.esp ?  Mart's Monster Mod - No Undead Rise.esp ?  Mart's Monster Mod - Shivering Isles.esp ?  Mart's Monster Mod - Slof Horses Complete.esp ?  Mart's Monster Mod for OOO - Knights .esp ?  OOO-DLT_Remover.esp ?  OOO-Water_Weeds.esp  WARNING: Missing/Delinquent Masters?  Oscuro's_Oblivion_Overhaul.esm ?  DELINQUENT Oblivion.esm ?  Mart's Monster Mod.esm ?  DELINQUENT Oblivion.esm ?  Mart's Monster Mod for OOO.esm ?  DELINQUENT Oblivion.esm ?  Toaster Says Share v3.esm ?  DELINQUENT Oblivion.esm

I'm also having problems leaving the house i choose to start in, i activate the door, and the game crashes as it finishes loading.

...Wait, DELINQUENT Oblivion.ESM? how does the game still work at all if OB.ESM is DELINQUENT?

i've also ran BOSS about 4 times, and Wrye Bash still says "WARNING: Has same load order as another mod."

Is Oblivion.esm the first on the list? Oblivion comes first before anything else or it will cause crashes. Do/are you using Wyre Bash or OBMM? That may help a bit.

Wait, why did BOSS set Oblivion.ESM to 4th anyway? that was certainly stupid of it. And now i can't fix it because i enabled that one stupid setting in Wrye Bash that makes it so that mod list changes in OBMM don't get saved and i can't remember how to disable the setting. Also, Wrye Bash is saying that Shivering Isles is 0KB.

That's because it is. There isn't actually anything in the shiverring isles mod there, it is a summy mod to load the Shivering Isle .BSAs

In Wyre Bash you can always just redate the Oblivion.esm to be the oldest.

Disabling Alternate start worked, but now some things (Skeletons, ETC) are giving me the Yellow ! of Death.