Page Not Found or Available without 'Everyone' role.

Hi all

Im on web as 640, nw04, ep 6.

We have implemented ESS/MSS and assigned the employee and manager roles to the users as required.

When I add the role 'Everyone' to an employee user in addition to the employee self service role , everything works fine in the portal and I'm able to access all the links and pages correctly.

But when I remove the 'Everyone' role, I get a message that says 'Page not found or available' when I try to access the links.

I have checked with the Employee role and the entry point is defined.

What could be wrong?

Thanks

Manoj