Landed costs on transfer orders?

We have a client who needs to roll in landed costs, specifically duty, when transferring goods from their UK to US warehouse.  Initially I thought this would work by turning off "Use Item Cost as Transfer Cost", as the Landed Cost tab appears on Item Receipts created from Transfer Orders.  Trying to use this tab, however, results in an error message:

"You have attempted to allocate landed costs to a transaction using an allocation method that results in no allocation for any lines in the transaction. The allocation method you chose is Quantity. To correct this problem, go back to the transaction and choose a different allocation method, or modify the items/lines on the transaction so that there will be some cost allocated to the lines."