Attempt to load data from and island that have no commodity offers listed in the market. The Trade Profiteer should prompt the user for the island since the auto-detect won't be able to kick in, but it should also not prompt the user to select a building on that island.
Enter the new description here, and press "Save" when you are finished.
How to reproduce
Will be difficult trying to find an island that doesn't have any data on it, but that is all that is required