Failed sudo yum groupinstall "GNOME Desktop Environment"

Issue

• We are trying to install a GUI onto a server, and when we run the command to install the group, we're getting the following error:

  user@example.com $ sudo yum groupinstall "GNOME Desktop Environment"
  Loaded plugins: rhnplugin, security
  Setting up Group Process
  rhel-5-supplementary-x86_64-custom/group                                          |  45 kB     00:00
  rhel-5-supplementary-x86_64-custom/group                                          |  45 kB     00:00
  Failed to add groups file for repository: rhel-5-supplementary-x86_64-custom - None
  rhel-5-virtualization-x86_64-custom/group                                         | 108 kB     00:00
  rhel-5-virtualization-x86_64-custom/group                                         | 108 kB     00:00
  Failed to add groups file for repository: rhel-5-virtualization-x86_64-custom - None
  rhel-5-x86_64-2011-custom/group                                                        | 1.0 MB     00:00
  rhel-5-x86_64-2011-custom/group                                                        | 1.0 MB     00:00
  Failed to add groups file for repository: rhel-5-x86_64-2011-custom - None
  Warning: Group GNOME Desktop Environment does not exist.
  No packages in any requested group available to install or update
  user@example.com $