Plugin error in vcenter

Hi,

I'm trying to install this plugin but am having some problems.  After installing the plugin, then accessing the openmanage console and successfully registering my vcenter, I open up the vcenter client and look at the plugin manager and the plugin is disabled with the error:

The following error occurred while downloading the script plugin from https://sndc1.sn.local/plugin/291b0355-3-8e0-48f9-8b34-7872-17628105.xml:  The request failed because of a connection failure. (Unable to connect to remote server)

First off, the SNDC1 server is our domain controller, so I have no idea why this plugin is trying to pull a script from there.  Secondly, even if it was (which I'm sure is an error), I have made sure that our vcenter server can access that server.

I'm not sure what's going on.  Any ideas?  Thanks.