Still using vCenter 4.1. We installed the plugin and if we RDP to the vCenter host the plug in works fine. However, if I try to run the plugin from my vSphere client, connected to the vCenter, I get "Error. Following tasks failed: Getting datastores: Could not get existing datastores". I've tried the client from multiple machines with the same result. Probably missed something simple on the client. All I did was enable the plug-in. Do I need to install a dll or something?