I could solve this error with copying regkeys for this and some errors, which followed. Now I am at a new error. I am missing cat-files. I copy them from another machine, too. If I will solve it, I let you know.
Is there a method to pretend missing cat files?
I know, that an In-Place-Upgrade is may more economically, but I don't want to risk to break the application running on the machine.