It sounds like a problem lies in
Reasonable Body Slider Mod. Try to uninstall it by deleting a file "player_creation.xtbl" from your SR3 folder.
Got a problem of my own, though.
I tried to use
JediDave's All New Character Customization with TTDiS. Started a new game, passed first mission. On player creation stage more than reasonable amount of things have gone wrong.
First of all, there is no model of player. At all. At any presets.
Two: when I try to restart player creation stage by trying to exit and load an autosave, loading times are infinite. Only way to enter creation stage is by starting a new game.
Three: if I try to select a specific skin color for player model, game is crashing.
Four: when I'm passing creation stage, game can load. Player body skin is totally black. Viper Eye Textures are working properly, clothes are behaving fine, only skin is going nuts.
Five: TTDiS is working fine without JD Customization, and JD Customization is working fine without TTDiS. This problem is present only with both of them installed together.
Six: I've tried to delete next mods from TTDiS compilation: Naughty Edition, Reasonable Body Slider Mod, Beach Pack, New Textures Project. Same thing as in №5.
I don't know what can cause this. JD Customization is not supposed to affect skin colors.
Installed on GOG version of SR3. TTDiS is v2.9, JD Customization is v1.5.7z.
Going on "my head vs. that problem" thing for 2 days. My head is losing.
Send help.