I tried using an earlier host profile I had created, it failed, so I created a new one based on one of my hosts and it still errors out when applying the profile:
Call "HostProfileManager.GenerateConfigTaskList" for object "HostProfileManager" on vCenter Server "vCenter.calix.local" failed.
Unexpected error updating task config spec: Unknown.
Guess it's time to use that support we pay for!
--Brian