Problems with Narcissus build


Just downloaded a full image using the Narcissus build system.
Unfortunately I am stuck at the GPE login screen (something tells me
that the window manager cannot be started). After entering username
and password, the screen becomes black, shows the cross cursor and
after approx. 5-10 seconds it returns to the login screen.

Any suggestions? I've tried reinstalling gpe-dm and gpe-login. Do I
need to reconfigure stuff?

Kind regards, Eelco