You have the Na+ Unit loaded, but not the parm.dat (or frcmod)
having the parameters for Na+ vdw. I don't know what file
they are in, but it may be in /amber10/dat/leap/parm/ since
we see /amber10/dat/leap/parm/parm10.dat (or possibly in
/amber10/dat/leap/lib/). With that in mind you might see a .dat
or .frcmod file with a name including 'ion' - grep Na+ to
determine if it is there and try loading that.
Bill
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Received on Sun Jul 25 2010 - 11:30:02 PDT
