@kbs: thanks! That helped. I have the folder now and can use it. Thank you so much, I would not have that found out.
Different question. When I set up my nookLauncher menu and removed e.g. tabs like shop, settings ect. Now, when I enable these tabs again. The picture is not shown anymore. I have only a little sign there instead of the pic. and the discribtion. How can I get the icons back?