Thanks Shawn. Do you mind sending over a screenshot of the visual and how you set it up? I'm not able to open the attachment you provided with my version of Tableau.
What version are you using? Anyway here's a screen shot:
After you get rid of the space in the Latitude field name, just put the Latitude and Longitude (not the generated ones) on the row/column shelves, and then rt-click each and change them from Measures to Dimensions:
And your map show appear.
Perfect! Thanks Shawn.