Unable to remove the XBMC Client and Unable to install Plex Client

Hi Folks,

          I just recently upgraded my Apple-TV to most current version of maintenance, I would like to remove the XBMC install and install the Plex Client. I tried uninstalling XBMC but it fails to remove, instead on the main Apple TV ribbon it now shows up CFBundlename under which the XBMC line item shows up. I go into maintenance and still shows XMBC as installed. I tried installing the Plex client, it goes through install process but the Plex menu item does not show up on the main menu.

What should I be doing to remove XBMC and get PLEX working.