LAMMPS (21 Aug 2012) units metal atom_style charge dimension 3 boundary p p p read_data data.m-HfO2 triclinic box = (0 0 0) to (25.642 25.957 26.4845) with tilt (0 -4.46691 0) 2 by 2 by 2 MPI processor grid 1501 atoms #read_data data.t-HfO2 #read_data data.c-HfO2 mass 1 178.0 group type1 type 1 500 atoms in group type1 compute charge1 type1 property/atom q compute q1 type1 reduce ave c_charge1 mass 2 16.00 group type2 type 2 1000 atoms in group type2 compute charge2 type2 property/atom q compute q2 type2 reduce ave c_charge2 mass 3 1.00 pair_style hybrid comb coul/cut 12.0 pair_coeff * * ffield.comb Hf O none ERROR: Pair coeff for hybrid has invalid style (pair_hybrid.cpp:330)