IEEE Invalid operation (TRAPS 13)

[Georgia Miller]

Does Anyone know what causes this error in Quiz?  I have never seen it before.

Q U I Z   (PowerHouse  8.19.C3)
Copyright 1998 COGNOS INCORPORATED
GREAT FALLS PUBLIC SCHOOL DISTRICT

> EXE APZBYORG.OBJECT
**** IEEE invalid operation (TRAPS 13).
 
ABORT: QUIZ.PH819C3.COGNOS 
 File error: #93
NM PROG  5a0.000caa90 qNFormat+$13c

  RUN QUIZ.PH819C3.COGNOS;INFO=" "; XL="PHLIBXLS.PH819C3.COGNOS PHLIBODX.PH819C3
.COGNOS"
Program terminated in an error state. (CIERR 976)

This is on an HP3000 with Quiz 8.19.C3.

This quiz source is about 170 lines of code.  I changed the Subfile used by this and several other reports to create the subfile with Quiz instead of QTP.  I believe this problem is being caused by data, because the report does print about 4 lines before it gets the above error.  

I have run several other reports that use the same subfile and they all get the same error.  One that sorts differently prints 31 pages before it stops with this error.

Thanks for the help.
Georgia Miller
Great Falls Public Schools.