When you start OE after posting orders from Edisoft, Adagio runs a routine to update the orders, just as it would if you had entered them directly in Plus. I assume this adds fields that are in Adagio but not in Plus.

If Adagio OE is already open when you post orders from Edisoft, this updating would not happen. Does the same error during "Ship All" happen if OE is closed when Edisoft posts and then Adagio OE runs the updating when it is opened?