Backup Exec with VMware 4.1 backup issue

Hi,

Backup exec 2012 - Media server

VMware 4.1 - 3 Linux and 2 windows Virtual machines.

I trying to configure backup with vmware 4.1 standalone host with 3 linux and 2 windows VM servers, but in backup selection list, virtual machines are showing as 0 bytes, there is no vmdk file is available, Even I tried to install Agent on Linux and windows server, but still it is showing as 0 bytes, can anyone help to fix this issue.