[Radiant] Update problems

[Nancy Carroll]

Hi All,

I have used Radiant Version 0.5.0 successfully, however after the
upgrade to 0.5.2, I can login but I can't access the "pages" page 
anymore ( I get an Application error (Rails) ). I can access snippets 
and layouts without any problems.
I don't get it. What have I done wrong here? I use Rails 1.1.6 with 
fast-cgi.

The 0.5.0 version of radiant was installed from a tar.gz file. The 0.5.2
has been installed using gem.

Any help would be greatly appreciated.
Nancy