User Prof. service is preventing new users to logon

> Dear All
>
> We installed the notebook under one profile called "Remmicom", then we
> placed this notebook in to a domain.
>
> However each new user wich tries to logon now gets this message.
>
> "The service User Profile-service is preventing the logon process"
> "Userprofile cannot be loaded"
> (this is translated from Dutch to English, so not sure this will be the
> correct sentence in English Windows installation)
>
> However, I looked a little bit further and it seems that my Default User
> profile is completely empty. I think this is the reason why he cannot create
> any new user.
>
> I tried to copy the profile "Remmicom" to "Default user" when I am logged in
> as "administrator" so now files being occupied by the system. I tried this
> in the good way by the menu "user profiles" and not just copy/paste.
> I always get this error when I try to do this:
> (again translation) "Cannot set security on target profile. The foldername
> is incorrect"
>
> Please help me out, how can we fix this?
>
> Best regards
>
> Nick Wouters
>