[Wien] lapw2 crashed

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Dear wien users,
  I'm calculating supercell calculations of Mn-doped GaAs.
When I add spin-orbit coupling after self-consistent calculation,
lapw2 crash,
 STOP FERMI - Error
 STOP
 Segmentation fault (core dumped)
 .in.tmp - No such file or directory
 Cannot access .in.tmp: No such file or directory
 Cannot access .in.tmp1: No such file or directory
 **  LAPW2 crashed!

   And lapw2.error file:
   'FERMI' - number of k-points inconsistent when reading kgen
   'FERMI' - check IN1 and KGEN files!
**  testerror: Error in Parallel LAPW2
~
 What this mean ? It seems IN1 and  KGEN file have no problem.  Could 
anyone help me?
 Thanks a lot !
-- 





sincerely yours 

Ying.Xu