[lammps-users] a problem in running pour examples

Hi,

I have been using version 21Dec09 of Lammps.
When I run in.pour or in.pour.2d from /examples/pour directory, I got this
error:

"Pair granular requires ghost atoms store velocity"
What does it mean and how can I solve this problem?

Thanks
Robabeh

Add a comminicate single vel yes command to your script. The
current version of LAMMPS has this in examples/pour/in.pour.

Steve