Problem with Becquart Fe-C EAM potential

Dear All,
When I am using Becquart potential with following syntex:

pair_style eam
pair_coeff * * Fe_C_Becquart.eam Fe C

I am getting following error.

ERROR: Incorrect args for pair coefficients (…/pair_eam.cpp:364)
Last command: pair_coeff * * Fe_C_Becquart.eam Fe C

Other potential by Hepburn and Ackland is working fine.

Your suggestions will be helpful.

Regards,

Dear All,
When I am using Becquart potential with following syntex:

pair_style eam
pair_coeff * * Fe_C_Becquart.eam Fe C

I am getting following error.

ERROR: Incorrect args for pair coefficients (…/pair_eam.cpp:364)
Last command: pair_coeff * * Fe_C_Becquart.eam Fe C

as LAMMPS tells you, this is the wrong syntax for this pair style. potential files for pair style eam have only one element. you file must be in a different format, possibly either eam/fs or eam/alloy, for which you are using the correct pair_coeff syntax.

axel.