I have GOG version.
Windows 7 PRO x64
Mods: TSLRCM, M4-78EP, Jedi Temple (this mod adds one lightsaber), Duplisaber, Loot & Immersion, NPC Overhaul. Telos Board Animated, Animated Panels Overhaul. And few retextures (NPC mostly, nothing that affects lightsabers, hilts, armors, robes).
Wait, I reinstalled the game, gonna check something, however, I am playing in other language than english so I have to convert all necessary files with converter (from Override and Modules folder) otherwise I'm noticing conversation errors. Maybe that's a problem?