CCL:G: The l502 error in CBS-QB3 calculation

["dewdew zhou" <dewdew(-)126.com>]

 Sent to CCL by: "dewdew  zhou" [dewdew|,|126.com]
 Dear all,
 I have used the B3lyp/cbsb7 method to calculate the geometry of a very loose
 complex, and it is termined well. Based on this geometry i used the CBS/QB3
 method to calculate the single point energy, and it always shows the following
 error:
  >>>>>>>>>> Convergence criterion not met.
  SCF Done:  E(UHF) =  -267.358083472     A.U. after  129 cycles
              Convg  =    0.4652D-04             -V/T =  2.0021
  <Sx>= 0.0000 <Sy>= 0.0000 <Sz>= 0.5000 <S**2>= 0.7554
 S= 0.5027
  <L.S>= 0.000000000000E+00
  Annihilation of the first spin contaminant:
  S**2 before annihilation     0.7554,   after     0.7500
  Convergence failure -- run terminated.
  Error termination via Lnk1e in /ichec/packages/gaussian/09a02/l502.exe at Tue
 Oct 20 10:27:32 2009.
  Job cpu time:  0 days  0 hours  1 minutes 49.3 seconds.
  File lengths (MBytes):  RWF=     48 Int=      0 D2E=      0 Chk=      3 Scr=
 1
 Do you know how to fix it?
 If you know, please tell me, i will very appreciate that. Thanks a lot!