DIFFUSE example

Hi all
I want to run the DIFFUSE file which is one of the example codes in lammps documents. But when I run it, it gives this error:

Also II am using the lates version of lammps but this example is from previous version. This file is among the list of changed files!!
ERROR: Invalid fix style (…/modify.cpp:714)

So how can I run this code??

http://lammps.sandia.gov/guidelines.html