to 2) I think it would be sufficient simply if you do a complete restart. This solves the problem

to 3) I do not know why that's not possible. Well, I got off on program management. Seems to me to be the only error. Therefore, just ignore

EDIT: Problem with Landscape Wallpaper. I put the Wallpaper into ".wallpapers" => name: mywall2.png
I choose c [Enter] and than 2 [Enter]. He tell me thats all done, but if i do landscape... nothing happens :/