WebPublisher server files installation issue

however

I'm trying to install Web Publisher 6.5.

As far as I see I did everything by the book.

Have Content Server, DA, Webtop up and running.

Installed the Web Publisher webapp in tomcat.

I got to the point of completing the installation by running wPServerWinSetup.exe on the content server.

I got as far as selecting the repository (my repository is offered, so the program could locate it).

At this pont user name and password is asked.

If I enter my installation owner name and password it would think for a while and responds:

"Fail to connect to the repository. It could be that the server is not up or the username/password is not correct. ..."

At the same time I can connect to DA or Webtop with the same superuser name and password to the same repository.

If I give a wrong username/password it responds immediately that the username/password is incorrect.

Any advice is welcome.