CCL:G: Modeling Antiferromagnetic Coupling in Gaussian 09

["M Gh" <mahnaz271163===yahoo.com>]

 Sent to CCL by: "M  Gh" [mahnaz271163%x%yahoo.com]
 I'm new to Gaussian,so I try to reproduce some example at Gaussian's
 website:"Gaussian.com,Tech support, white papers, Modeling
 Antiferromagnetic Coupling in Gaussian 09".But I'm confused about one.After
 running the 2nd job, the output is different from mine.
 The output that mentioned in the Gaussian.com site is as follow:
 Stability analysis using <AA,BB:AA,BB> singles matrix:
  ***********************************************************************
  Eigenvectors of the stability matrix:
    Eigenvector 1: ?Spin -B2G Eigenvalue=-0.0129755
    75A -> 79A 0.68583
    76A -> 80A 0.70288
    Eigenvector 2: ?Spin -B1U Eigenvalue=-0.0066257
    70A -> 79A -0.10926
    75A -> 80A 0.37604
    76A -> 79A 0.89115
    Eigenvector 3: ?Spin -B3U Eigenvalue= 0.0058150
    77A -> 80A -0.34398
    78A -> 79A 0.92278
    The wavefunction has an internal instability.
 my output is as follows:
 ***********************************************************************
  Stability analysis using <AA,BB:AA,BB> singles matrix:
  ***********************************************************************
  Eigenvectors of the stability matrix:
  Eigenvector   1:  1.000-B1G  Eigenvalue= 0.0272861  <S**2>=0.000
      78A -> 79A        0.99727
 could anyone please help me with this question that where the difference comes
 from?
 Regards