Import the sql file in the attached zip to create an empty table named, si_invoice_item_attachment. Then access SI. It should have updates to apply. Select UPDATE and hopefully it will complete the update of your database.
This missing table is probably something that I created manually in the past, forgot about it and thought it was part of the standard application. It isn’t used at all but since the patch manager expects it, it needs to be there.
Let me know how this works.