This issue is finally solved. I thought it would be worth posting an update, in case anyone else ends up with a similar issue and finds this in a web search. The problem appears to be with the OVA installation (at least the current 5.1.1 one). If you manually select the IP for either interface, the installation bombs. Keep both interfaces (on different subnets/VLANs) as DHCP, and the installation runs fine, and the /cloud directory is available on port 443. Hopefully VMware will look into this and fix it for their next release.
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