I have a SP 2010 document library that I scan and upload images to by using the KnowledgeLake Capture product. Until recently the copy item from the document library to a picture library on the same site collection worked without issue but now that the libraries have grown in size (@ 20k # of items) I'm receiving error notices from the doc library workflow but the images are still being copied successfully. I've checked the ULS and it states error retrieving config XML 'Create Item'...An item with the same key has already been added. I've verified only 1 item exists with the SP ID and I've tried another suggestion from another blog of creating a new copy action item and republishing the workflow but so far, I'm still getting the error notices. Any thoughts or solutions would be appreciated.