Adding Linux VMs

How about adding Linux VMs Servers to Backup Exec 2014?

Don't know how can I add Centos 5.x and 6.x to Backup Exec 2014 V-Ray edition. Backup Exec gives error every time I try to add the Linux VM.

The server was unable to complete the requested operation

Any ideas how to create friendship between backup Exec 2014 and the Linux VMs?

Many Thanks

Syed Mazhar