Illegal characters in global prefix

  Explanation:   The  value  specified  for   the   /GLOBAL_PREFIX
  qualifier, or the file name if /GLOBAL_PREFIX was not specified,
  contains a character  which  is  neither  alphanumeric  nor  the
  underscore character.  The converter will still operate, but the
  resulting code may not compile or link properly.

  User Action:  Specify a value for /GLOBAL_PREFIX which  contains
  only  the  upper  or  lowercase  letters,  the  digits  0-9,  or
  underscore ('_').