Hmmmm.. slightly confused here..
This is for TFD right?
You downloaded the DFLW Exp pack and installed it into this?
If this is for TFD then you needed to install the DFTFD Exp pack, not the DFLW Exp pack, this is where your problems are caused from - it's the wrong one.
Afraid to say you'll have to save your PLAYER.SAV file (this contains your keymapping for your keyboard and game stat's that the game keeps on it's own) and then delete the game and reinstall.
After you reinstall, go
HERE to download the DFTFD Expansion Pack at DFArena - this one was creaated by TerraNova-EXP.com and it should solve your problems.
Hope this helps,
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Almost forgot, in order to have people come into your server, both you and they have to have the SAME exp installed or you'll run into these type problems again...