Authoring a Pipe iPart

[sheriff12]

I am trying to do this tutorial in Inventor 2014's TUBE & PIPE section. After clicking the Manage Tab> Author Panel> Tube and Pipe command a dialog box opens. I selected Pipes in the TYPE list, I selected Welded in the END TREATMENT list. The instructions then direct me to Click the red required fields for the TABLE MAPPING. You are then supposed to select the attributes from the drop down lists. The drop down lists are there but there is nothing in the lists to select. For example: Nominal Size is a catagory on the left under PARAMETER. The Right Column has the heading TABLE MAPPING, this is where the drop down lists are. For Nominal Size I am supposed to select NPS from the drop down list, but like I said there is nothing in the lists to choose from.