Has anyone seen this error: Value Cannot be Null. Parameter name: Source. I had a working form and workflow that did not allow for management of content, all content was ITEMs. I turned on manage content and then created a new field and modified the contents. I wasn't able to do what I needed to do so I deleted the field from the list, the form and removed the management of content and get the error: Value Cannot be Null. Parameter name: Source and also have a bunch of list items I didn't have before! Any ideas on how to fix this would be hugely helpful!
I don't want to go the nuclear and recreate the list, WF and Form, but fear I may have to :-(