Schlüssel kann nicht erzeugt werden
Which platform are you running? Does keygen work on the command line? What are your keygen parameters?
If you can provide the information requested in comment #1, please add it.
To further investigate this issue, KDE developers need the information requested in comment #1. If you can provide it, or need help with finding that information, please add a comment.
No response; changing status. If you have new information, please add a comment.