Short after the release of Knights of the old Republic 2 for Linux, Aspyr now released a hotfix on Steam, which allows to have the TSLRCM-Mod installed, without crashing the game at launch:

[Linux] Hotfix out today 07/24
A quick hotfix to address 2 major issues with TSLRCM

- The game no longer crashes at launch with TSLRCM installed
- Custom VO and effects in TSLRCM now play correctly

Chime in team Linux if you are still have issues with TSLRCM installed.

Nice to see, that Aspyr is still looking after the port and fixing bugs!