patch DISU to 2 residues

From: jose correa (corrjose_at_gmail.com)
Date: Wed Dec 17 2008 - 11:58:14 CST

Dear NAMD's users

I have a protein that have one bond Cys-Cys, so, I need to add:

patch DISU A:131 A:215
but, after run the psfgen, its output shows:

Created by CHARMM version 27 1
aliasing residue HIS to HSD
aliasing residue ILE atom CD1 to CD
applying patch DISU to 2 residues
no segment A
ERROR: failed to apply patch
MOLECULE DESTROYED BY FATAL ERROR! Use resetpsf to start over.

Can you help me?
Best wishes

Jose Correa-Basurto
ESM-IPN, Mexico

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