ZINDO not parameterized for Cl in Gaussian 98?

 Hello,
 I'm attempting to evaluate the methods provided in G98 for calculating UV/Vis
 spectra.  As a test case, I'm looking at Co(II) complexes.  Cotton and
 Wilkinson (Advanced Inorganic Chemistry) provide the spectra of a tetrahedral
 and an octahedral Co(II) complex.  The tetrahedral complex is [CoCl4]2-.
 When I attempt a ZINDO calculation on this complex in G98, I get the following
 error:
   forrtl: error (73): floating divide by zero
 The last line in the log file is:
   Generate ZINDO/S integrals.
 If I replace Cl with F, the calculation proceeds normally.  I also attempted a
 Cl dimer, which fails in the same manner as the [CoCl4]2- complex.  CIS works
 for both cases.  I have tried several different ground state geometries and
 altering the relevant G98 overlay options. The manual says that ZINDO is
 parameterized for H-Cd, but based on my calculations, I'm not so sure if Cl is
 included.  Can someone confirm that ZINDO, as implemented in G98, is
 parameterized for Cl or offer suggestions on how to perform these calculations?
 Thanks,
 Scott
 --
 Scott McMillan - smcmilla #*at*# nwu.edu - http://winnie.chem-eng.nwu.edu/~scott/
 Institute for Environmental Catalysis
 Department of Chemical Engineering
 Northwestern University