You are correct about not having to select a RS, I was just asking to see if you had tried it multiple ways and still getting the same error. I am working on asking some colleagues if they have seen this before and if so what was the cause / fix.
When you say you are an admin, if you go into Admin/User Management under the Access section do you have access to all options and also have the radio button checked?
If you don't want to put it on a public forum, feel free to email me the company you work for and I will see if I can see anything that looks out of the ordinary without getting deep like client care will be able to.
I didn't' ask this and should have but have any other data feeds been set up?