Got the same thing last night.
1) During the game, when did the problem begin to occur? After beating Sion with Atton on Malachor V.
2) Did you install the latest version of the mod? (1.8.4 and 1.2 respectively) We only provide assistance for the most current version of those mods. Yes
3) What version of the game do you have? (Steam, GOG, 4CD, KotOR Collection?) What region is the game designed for if it's the 4 CD version? Steam
4) Did you update your game as required by your game's region? (4-CD version ONLY)
Yes
5) Did you install this over the previous version(s), or did you perform a fresh installation as required by the TSLRCM's read-me file? Fresh
6) What other mods have you installed? Please give an accurate list and provide links to each of these mods - even if they are found on this site. (We don't actually know them all!.) M4-78 and KSE
7) Can you be more specific about the error? At what point did it happen? Malachor V. Beat Sion. Atton runs off. Game crashes to load screen and freezes.
8) Have you tried re-downloading/re-installing the mod? Yes
9) Have you tried using a different save game? Yes
10) Have you tried starting a new game?
Not playing all the way through again just to test a bug.
11) What Operating System do you use? (List Virtual Machines as well if you are using them.) Windows 10
12) Can you confirm that you see the TSLRCM logo on the the main menu screen?
Yes
13) What language is your game set for? English
14) Which language of TSLRCM are you using? English