Unable to export the users & security roles from powershell script

Hi All,

I'm using the below powershell script to export the users and their related security roles which I got it from the below link.

https://vgrandhi.wordpress.com/2014/04/22/ax-2012-powershell-script-to-export-users-and-roles/

But I couldn't get the users list exported.

Can any body help on this?

Regards,

Aravind Reddy.