Weapons Problem

[Starfall]

I installed TSL and everything was working perfectly, but when I started the game I understood that weapons I put on myself and other NPCs didn't show their effect! I mean, I hit normal damage with force powers, however I can't even be a challenge to those droids in Peragus with a vibroblade! Also T3 unit couldn't use its lightning tool. I also saw that even with a vibroblade, my character doesn't walk as it supposed to be. It walks like it hasn't got anything in its hand. Does anyone knows a fix for it? I have a mod but I encountered the same problem before I installed the mod too, so I don't think the problem is with it.

Please write the fix if you know it. I cannot play the game as I should be!