Could you try this? : VMware ESX Server view
Ensure as well you are running the latest version of Orion (9.1 SP4) and if this is already the case, I would advise you to open a ticket with the support.
- To Open a Ticket: http://www.solarwinds.com/support/ticket
You have a first issue with the JobScheduler that cannot be reached even if it is started, the second problem is that Orion should start polling the VM guests information on the ESX server automatically without requiring you to assign some UnDPs.