When I launch the game, I get a bunch of error in the console, like thing missing I think, and slave shop don't work. I heard it was because the mod broke during installation, but I don't see how I broke it when I just followed the instruction and did nothing else than install random portrait mod, and a mod that add more body part (I tried to remove it, problem still here.)
It seems you posted the message here and the errors under Aric's mod, which is a separate mod though this one is derived from that one. Not exactly sure what's going on and which mods you actually have, but based on those errors you at least have Ralph's mod.
Either way neither of these two mods is compatible with the more body parts mod as it is based on version 1.0d Strive, whereas these mods were based on 0.5.25 with my patches. Even then they change the game in ways that are contradictory.
Neither of these two mods have a standard installations which causes most of the problems especially when accompanied by normal mods. For Ralph's mod, people often apply the aricsexpansion mod when they apply the normal mods, which breaks everything because Ralph's program folder contains changes that were not included in the aricsexpansion mod folder.
Based on the errors I found that your person.gd file is at least 3 lines shorter than expected. Also you are missing hybriddict from description.gd which should not happen unless you were moving files into the program folder as the mod system should not remove it. You may have corrupted the program folder and may need to extract a new copy from Ralph's mod archive.
Edit: your errors appear to be nearly identical to https://itch.io/post/2226559
Okay so from what I understand, installing more body part mod broke aric expansion ? And I posted it in the two mod topic because I tested ralph version, and the normal version, and I got different problem so I tho it would be better to do 2 different bug report for the 2 different version. I'm going to try to just, install Aric expansion, and try first with only it, with a fresh start of course and see what happen.
Now I get this:
SCRIPT ERROR: changerace: Invalid set index 'marketup' (on base: 'Reference (person.gd)') with value of type 'String'
At: res://files/scripts/characters/constructor.gd:125
SCRIPT ERROR: changerace: Invalid set index 'marketup' (on base: 'Reference (person.gd)') with value of type 'String'
At: res://files/scripts/characters/constructor.gd:125
SCRIPT ERROR: changerace: Invalid set index 'marketup' (on base: 'Reference (person.gd)') with value of type 'String'
At: res://files/scripts/characters/constructor.gd:125
SCRIPT ERROR: changerace: Invalid set index 'marketup' (on base: 'Reference (person.gd)') with value of type 'String'
At: res://files/scripts/characters/constructor.gd:125
With only AricExpansion, not any other mod active or even installed, fresh restart (I think) where I extracted new files from both AricExpansion file, and the game provided by Ralph
Edit 2: I managed to fix the error (For now) with the normal version of the mod, with a complete fresh restart (Deleted every game file), i didn't try with ralph edit for now, maybe later.