hello! i made a female preset using morph maker before and it was all good, but when i used the same process but for a male preset, it said "morph faces do not match" or something. then i tested it using the base mesh twice and it worked, which means the male body preset only works when its not altered at all.

i am using the most recent version of morph maker updated by andrew, if that's any help.

You may want to double check the method and settings you're using- as well as checking the vertex and face counts in Blender from the before/after that you haven't accidentally added or removed any geometry.
If the issue is 100% replicable, it may be best to ask on the Sims4Studio forum where Andrew is active.
The Github also notes an issues section and a Discord where you can report bugs: https://github.com/CmarNYC-Tools/TS4MorphMaker

I love your username, by the way