Does anyone know how to install modules the right way ?

I searched here and at terra-arcanum, but couldn´t find anything helpfull.

Just downloaded two modules and couldn´t get them to work, useing GoG version and UAP patch.

Yes, the module name is shown in the box, but once I try to push "done" it doesn´t do anything.

Are you sure? Did you try starting new game after choosing module?

To start a module go Options - Choose module - Done - Single Player - New Game - And voila, you're playing module instead of Arcanum. At least that's how it works on my end.

Oh you mean pressing done does not exit the options?

Well, I have UAP, high res et all installed and the modules I've tried work or at least run just fine (Have completed only one so...). I only have the official ones and they are installed in D:\Arcanum\modules. What modules are you trying to run?

I tried Hellgate and Delirium of Evil.

Hellgate is from Troika I guess.

Hellgate does at least run for me but I did find one module that doesn't seem to work. Dusty dunes does run but camera starts wrong place and world is static (nothing moves). It also crashed talking first person I saw. This is with or without the unofficial patch for the module as well as redownloading the thing. I probably should reapply the highres patch as I installed the game when I had 4:3 aspect ratio (1600*1200) monitor and now I have 16:10 aspect ratio (1920*1200) monitor so game aspect ratio is set wrong for my current monitor...

Edit: Changing game resolution (from 800x600 to 1280x800) fixed the above problem for me.

Anyway, you could first try redownloading the module's and trying again and if that won't work I suggest you reinstall the game. I'm not sure if UAP affects the modules so you could try modules without it installed (well, I suppose it does contain few game mechanics fixes but most of the fixes only apply to arcanum module itself.). Oh and do you by change have the Beta content restoration pack/Arcanum UAP: Extra Animations Pack installed?

Ok, I found my misstake.

I created for every module an extra filefolder. So I could see them in the options, but wasn´t able to select them.
So dumb.....

Thanks everyone for trying to help me.