Cannot Pair VRMS Servers - VRM Server generic error. Unexpected status code: 404

I have been setting up SRM as per the documentation and am at the part where I have a configured VRM server on each side. My next step on the vSphere Replication tab is #3 "Configure VRMS Connection". When I click the "Configure VRMS Connection" link I get a dialog box that says: "Do you want to configure VRMS connection?". I click "Yes" and I get another dialog box that says: "VRM Server generic error. Please check the documentation for any troubleshooting information. The detailed exception is: 'Unexpected status code: 404'."

Has anyone seen this before? Do you know how to solve it?

Thanks