Unregistered users and viewing pages

Hello,

we had setup our XWiki so, that users had to login first. First thing a user gets from the Wiki was the login page. We did this by setting view rights to every page. So an unregistered user can not see any page.

Now we want to make some pages viewable for ungegistered users.
So I made some pages viewable for all (is did remove the check mark for every group on those pages.

But now, an unregistered user gets the main page, but no navigation panel and the tag cloud showing an error message.

How can I resolve this?

Best regardsmainpage