mismatch of topology with parameter file

From: Moumita Maiti (m.moumita_at_gmail.com)
Date: Tue Jul 03 2007 - 05:28:30 CDT

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Dear all,

                  I have used "top_all27_prot_na.rtf" topology to generate
psf file. I get in parameters information the
molecule has 120 cross terms.

I use "par_all27_prot_na.inp" parameter file in *conf* input file where it
shows 0 crossterms. The namd run terminates with the error
Info: 250 BONDS
Info: 622 ANGLES
Info: 1049 DIHEDRAL
Info: 73 IMPROPER
Info: 0 CROSSTERM
Info: 130 VDW
Info: 0 VDW_PAIRS
FATAL ERROR: CAN'T FIND CROSSTERM PARAMETERS FOR C NH1 CT1 C NH1 CT1
C NH1

If anybody has already faced this error and got solution, please let me know
how can I remove this error.

Thanks in advance,
Regards,
moumita

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