error in iefpcm

[sungura(-(at)-)boun.edu.tr]

 Dear CCLers
 I have a problem with iefpcm ts optimization. The calculations have done at
 b3lyp/6-31g* level and
 g98 gave me an error like
    16       16    1.200   1.200
    17       17    1.200   1.200
    18       18    1.200   1.200
    19       19    1.200   1.200
    20       20    1.200   1.200
  -------------------------------------------------------------------------------
  Too many tesserae in PolyGen
  Error termination via Lnk1e in /usr/local/g98/l502.exe.
  Job cpu time:  0 days  0 hours  1 minutes 21.9 seconds.
  File lengths (MBytes):  RWF=   79 Int=    0 D2E=    0 Chk=    7 Scr=    1
 the additional keywords  are
 noscfvac nocav  tsare=0.001 radii=bondi alpha=1.2 alphaH=1.2
 Although I have changed the tsare number to 0.4. This time optimization cannot
 completed due to
 - Number of steps exceeded,  NStep=  99
     -- Flag reset to prevent archiving.
 error
 Does anyone know how to solve this problem
 thanks in advance
 aylin.