If you use Multi Other Info for SellerDeck V12.0.0 through V12.0.1 and update SellerDeck to V12.0.2 or V12.0.3, you will need to unzip the attached file into your Site folder(s) after the SellerDeck update.
You also need to do the above if upgrading from 12.0.2 to 12.0.3.