I think I know now where I maid a mistake. In the zip-file were no folder "res_mods" included. So, I will try it again, with the right folder.
edit:
Yes, that was the mistake, now everything is alright.
the files (mods) in the Aslains_Custom_mods - folder are installed after the normal installation?
It's important for me, because I have some files with a language translation. And so first the normal mod have to be installed, before my german translation files will be installed.