[xwiki-users] Page layout not changing after setting it in panels page

I have installed xwiki-enterprise-web-1.8-milestone-2 into a tomcat6 instance and cannot seem to change the page layout of one of the spaces. Changing skin colors works fine. When I go to the panels page and choose page layout, I can see the no sidebar chosen. I choose another layout without a problem and click save. This reports that the layout has been saved correctly. However, when I go to the space that I edited, I still get the no-sidebar option. Any thoughts? Thanks, Sean