can anyone help i have trolls and ogres invisible others are ok.
Yea it happens to everyone. Its a bug. It seems to happen when there are other monsters around. If you find Trolls and Ogres mostly alone they seem to spawn normally.
i have a question if i decide to add new preset will i have to start game all over again?
No, you don't need to start over again. You press "new game" to start the character creation process and make your character how you want it then save it as a preset. Then just back out to main menu and reload your current save. From that point you press "/" on your numberpad to access the cheat menu where you can load a saved preset.
Tried building my own fort, but when i try to put furniture in there, they are all going through the floor. Any idea how to fix it?
If you notice the right side of the screen when in building mode there are instructions. Pressing "O" toggles snap mode on and off. Holding shift while scrolling will raise/lower your item to a desired level.
Snapping isn't all that great in this game, but its better than it used to be at least. I used to have to place most things manually at first to get it where I wanted then other things could snap to it like the placement of a wall needed the first one in a correct spot then the rest could snap to it.