I got an internal error in Edit.c

"Chris Xu" <[email protected]> Fri, 10 Feb 2006 14:33:03 -0500

Newsgroups	gmane.comp.lang.4gl.fourjs.user
Message-ID	<002601c62e78$cf631c10$bdd849c6@chrisxp>

Hello Guys:
 
      I got this error from one of our production site, any ideas?
 
      Program stopped at 'ab_chg.4gl', line number 445.
      FORMS statement error number -6327.
      Internal error in the run time library file Edit.c(519):
      Node != NULL.
 
Thanks,
Chris