The following bug(s) cause an error every time a user tries
to login or execute a shell, if their default shell is
csh/tcsh.  It also halts processing of the user's own
customization files.

The 8th line in /etc/profile.d/kde.csh says:

  kdepath="${KDEDIR}/bin"

Because this is for csh, not sh, it should read:

  set kdepath="${KDEDIR}/bin"

Also, lines 10 through 12 that read:

  if ( echo ${PATH} | grep -q ${kdepath} ) then
    exit
  endif

should read

  echo $PATH | grep -q $kdepath && exit