CCL: NBO + l607.exe error

Could anybody solve this severe problem?
 Sent from Yahoo Mail on Android
   On Fri, 5 Jul 2019 at 1:23 am, Mo Fateh
 mo.fateh|*|<owner-chemistry ~> wrote:
 Sent to CCL by: "Mo  Fateh" [mo.fateh()]
 Dear CCL users
 I got the following error during NBO calculations of some organic
 <<Input file>>
 # pm7  nosymm geom=allcheck pop=nbo guess=read IOp(3/59=5)
 <<The error>>
 Unable to label the NBOs properly: 149 unstarred orbitals
               77 occupied orbitals
  Error termination via Lnk1e in C:\G16W\l607.exe at Thu Jul 04 23:17:13
  Job cpu time:      0 days  0 hours  0 minutes 
 7.0 seconds.
  Elapsed time:      0 days  0 hours  0 minutes 
 6.1 seconds.
  File lengths (MBytes):  RWF=    20 Int=      0
 D2E=      0 Chk=    94
 Scr=      1
 Can anybody solve this problem?
 With thanks.
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