Heeeeeeelllllpp!
I'm trying to make a new prefab as per the manual, except I can only get it to save one layer of my 3 layer model.
I do what it says - place the cursor at 0,0 in layer 5, click and drag to cover the floor, (I have made exactly the room in the manual), but when I use '+' to move up a layer, if I keep rmb pressed, the selecion moves up too and I lose layer 5. If I don't keep rmb pressed, then as soon as I press rmb, it throws away the level 5 selection. I'm sure I'm doing something wrong but cannot figure out what.
Please advise me, you peeps who know what you are doing. 8-{