Login Error RHEL

[Dave Martini]

I'm getting this error when I log into my RHEL4 box at the console as root.

"Cannot find or run the base session script, will try the Gnome
failsafe session for you."

When I click OK I think get this error

"This is the failsafe Gnome session. You will be logged
into the "Default" session of Gnome with no startup scripts run.
This is only to fix problems in your installation."

I get what appears to be the normal looking gnome desktop after
I'm logged in and everything seems ok.
I get the same 2 errors above when I switch to KDE as well.

Does anyone know a fix for this?
Thanks.
Dave.