You already have a min1.out file from a previous run.  Either delete it
by hand or add "-O" to the sander command line to overwrite old files.
jim
On Fri, 14 Jul 2000, EOIN GALLIGAN wrote:
> <FontFamily><param>Times New Roman</param><smaller>Hi all,
> 
> 
> Hello,
> 
> 
> I am doing a very basic minimisation of a ligand to get to grips with 
> the process. Below is my .in file:
> 
> 
> <color><param>0100,0100,0100</param>&cntrl
> 
> maxcyc=200, imin=1, cut=12.0, nscb=20, idiel=0 scee=2.0, 
> ntpr=10.0,
> 
> &end
> 
> 
> To start the minimisation, i use:
> 
> 
> sander -i min.in -o min1.out -inf min1.inf -c mtx.crd -p mtx.top -r 
> mtx.min1
> 
> 
> However, I get the following error message:
> 
> 
>   Unit    6 Error on OPEN: min1.out                                                
>                         
> 
> Thanks in advance for any help
> 
> With Regards,E. Galligan</color><FontFamily><param>Arial</param><bigger>
> 
> <nofill>
> tel: 0115 9515151 x66272
> mob: 07968 349629
> mob email:eoingalligan_at_sms.genie.co.uk
> 
> Laboratory of Biophysics and Surface Analysis,
> Institute of Pharmaceutical Sciences,
> University of Nottingham,
> Nottingham
> UK
> 
> 
> 
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James W. Caldwell                          (voice) 415-476-8603
Department of Pharmaceutical Chemistry     (fax)   415-502-1411  
Mail Stop 0446                             (email) caldwell_at_heimdal.ucsf.edu
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Received on Fri Jul 14 2000 - 09:28:45 PDT