Plug-in for Vmware Vcenter Appliance

I have installed de Backup exec Plugin for on vmware (version 2.1). With vCenter Client i connect to the vCenter Applianbe. When i click on the tab Symantec Backup Exec and log te backup server i see no info (see attachment). The same view when i log on a singe ESXi server.

Is the vcenter appliance not supported.

• Vmware  vCenter Server applicance 5.5.0 2442330
• Vmware ESXi  5.5.0 1623387
• Vsphere Client 5.5.0

Thanks

Abdel Belgdour