I am trying to establish a VCenter as an External Provider.  The when I try to "Test" the connection, the ovirt error message says that I have "failed to communicate".

The Vcenter logs clearly shows the logging in and logging out of the ovirt administrator to the vCenter instance.

And the final error message says:

	Jun 22, 2016 9:49:06 AM		Provider VMWare was updated. (User: admin@internal)
	Jun 22, 2016 9:47:01 AM		Failed to retrieve VMs information from external server vpx://vcenter.mcsaipan.net/MCS1/vmware.mcsaipan.net?no_verify=1

I am using oVirt 3.6.6
Vcenter Server Appliance
no Cluster


Uncaught exception occurred. Please try reloading the page. Details: Exception caught: Exception caught: (TypeError) __gwt$exception: <skipped>: Cannot read property 'f' of null
Please have your administrator check the UI logs

This guy pops up when I try to connect.

Anyway just looking for a clue. Any suggestions are welcome.