title: LAMMPS Error - Incorrect args for pair coefficients
body: <p>With only one atom type, I used:</p>
  
  <pre><code>pair_style eam/fs
  pair_coeff * * /potentials/Zr_#2.eam.fs Zr
  </code></pre>
  
  <p>But I keep getting the error: Incorrect args for pair coefficients.  I am also sure that the path to the potential file is correct.  How can I fix this?</p>