Holowan Duplisaber 
http://deadlystream.com/forum/files/file/424-holowan-duplisaber-beta/ 
  
M4-78 1.1B 
http://deadlystream.com/forum/files/file/399-m4-78ep-11b/ 
  
HK-47 Rejuvenated 
http://knightsoftheoldrepublic.filefront.com/file/HK47_rejuvenated;121155 
  
Thorium Charges Mod 
http://deadlystream.com/forum/files/file/147-thorium-charge-mod/ 
  
90SK Robe Pack 
http://knightsoftheoldrepublic.filefront.com/file/90SKs_Ultimate_Robe_Pack;87944 
  
Megaskin Party Pack 
http://knightsoftheoldrepublic.filefront.com/file/Mega_Reskin_Pack;94685 
  
This is every mod I currently have installed. Current party members include Handmaiden, Mandalore and Bao-Dur. 
  
Tried removing override folder from the root folder entirely. Game will not load whatsoever now. Placed it back in and received same problems as before, able to run around the tomb until I attempt to descend to the lower chamber and face the Sith Lords. 
  
Update: By finagling with some party member switches in combat, I was able to get down to the bottom of the temple without triggering the cutscene that I think is causing the problem. The "main" Sith Lord, the one with the DB lightsaber, seems to be completely missing for some reason.