Error downloading plug-in. Make sure that the URL is reachable and the registered thumbprint is correct.

hi all,

Am getting this error in vCenter, running vCenter 7.0. Under Administration> Client Plugins its the 'com.vmware.vrUi' causing this issue, which seems to be for vSphere replication, which was once deployed but is now gone.

Also under: https://vcenter.internal.kloudit.com.au/mob/?moid=ExtensionManager , I have the following:

Any ideas on how to resolve this?