From Reddit's /r/Kotor sub TSL Mod Guide:
at the very end, it reads:
IMPORTANT -- FINAL INSTALLATION INSTRUCTIONS
As a final step you will need to go into your game's override directory, locate, and delete two files, if they're present: "CM_baremetal.tga" and "CM_baremetal.txi".
It won't let me link it, but the guides should be pinned up top in the subreddit. These mods are in the list, though not currently suggested due to aesthetic divergence. Those files may be buggy with the game in general and cause incompatibilities.