How to write the buckling mode to the .fil file ?

[elliotp]

I need to write a buckling mode to the .fil file that
can be used in a postbuckling analysis.

I have read that I need to modify the .inp file and
I include the part below:


---------------------------------------------------------------
** OUTPUT REQUESTS
**
*Restart, write, frequency=0
**
** FIELD OUTPUT: F-Output-2
**
*Output, field, mode list
8,
*Node Output, nset="Geom_Gemini TP-1".Set-1, variable=ALL
*Element Output, elset="Geom_Gemini TP-1".Set-1, directions=YES, variable=ALL
*Modal Output, variable=ALL
*Energy Output, elset="Geom_Gemini TP-1".Set-1, variable=ALL
*Contact Output, nset="Geom_Gemini TP-1".Set-1, variable=ALL
*Radiation Output, elset="Geom_Gemini TP-1".Set-1, variable=ALL
*Node File
---------------------------------------------------------------

BUT I always received the error:

***ERROR: in keyword *ELEMENT, file "linear_buck.inp", line 22892: Element
number is not an integer or exceeds 9 digits for element of type
C3D4.
***NOTE: DUE TO AN INPUT ERROR THE ANALYSIS PRE-PROCESSOR HAS BEEN UNABLE TO
INTERPRET SOME DATA. SUBSEQUENT ERRORS MAY BE CAUSED BY THIS OMISSION


Can you help me out here ?

Kind regards,
elliotp