CCL:G: nbo analysis

From: "sina rastegar" <sina_rastegar1979 _ yahoo.com>
Subject: CCL:G: nbo analysis
Date: Thu, 27 May 2010 00:34:48 -0400
 Sent to CCL by: "sina  rastegar" [sina_rastegar1979,yahoo.com]
 In nbo analysis I have 9 warnings which shows 9 low occupancy in core
 orbiyals.after which inversion of nbo labels with bd occurs.
 WARNING:  1 low occupancy (<0.9990e) core orbital  found on  B 7
            1 low occupancy (<0.9990e) core orbital  found on  B 8
            1 low occupancy (<0.9990e) core orbital  found on  B10
            1 low occupancy (<0.9990e) core orbital  found on  B12
            1 low occupancy (<0.9990e) core orbital  found on  B16
            1 low occupancy (<0.9990e) core orbital  found on  B17
            1 low occupancy (<0.9990e) core orbital  found on  B19
            1 low occupancy (<0.9990e) core orbital  found on  B20
            1 low occupancy (<0.9990e) core orbital  found on Na21
            --- Apparent excited state configuration ---
  The following "inverted" NBO labels reflect the actual hybrid
 overlap:
                  NBO 432 has been relabelled BD
                  NBO 442 has been relabelled BD
                  NBO 450 has been relabelled BD
  Unable to label the NBOs properly:  64 unstarred orbitals
                                      61 occupied orbitals
  Error
  Error termination via Lnk1e in /root/g03/l607.exe at Thu May 27 14:41:42 2010.
  Job cpu time:  0 days  1 hours 19 minutes 32.4 seconds.
  File lengths (MBytes):  RWF=    209 Int=      0 D2E=      0 Chk=     23 Scr=
 1
 I would appreciate your suggestions.
 Also I use GenNBO.5 and I could not find free NBOview or any free orbital viewer
 software.could anybody introduce a software or a link for free download?
 with my best regards to ccl.net & all subscribers.