I added a new sharepoint choice field to my list. I already had an existing nintex form for that list. I added an new choice field to the Nintex form. When I try to connect it to the sharepoint form, I get an error "The server encountered an error processing the request. The message is 'Object reference not set to an instance of an object'". I might add a horribly formatted error message with a bunch of embedded HTML.
Any idea what causes this??