how add bond in psf file?

From: Luca Bellucci (bellucci14_at_unisi.it)
Date: Mon Sep 25 2006 - 08:18:27 CDT

Hi all,
How add bond in psf_file?
When I try to add bond in psf_file I obtain
this ERROR:

FATAL ERROR: Atom 1300 has bad group size. Check for duplicate bonds.
------------- Processor 0 Exiting: Called CmiAbort ------------
Reason: FATAL ERROR: Atom 1300 has bad group size. Check for duplicate bonds.

Thanks
Luca

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