On Saturday 18 August 2018 09.43:45 Rolf Schmidt wrote:
> AFAIK only user names starting  with a number are really forbitten and
> the user name is not the problem. It seems, that tdm dosn't like the
> Umlaut in the password.
>
> Fine regards
> Rolf


Have you tried setting the password in kuser? In my opinion, if kuser lets you 
set a password but does not accept later, it would be a bug.

Thierry