Yes, lets try to keep different related topics or questions out of other people's threads, m'dears!
As for your issue, Bluethewingedwo, this file might need to be manually modified. For example, delete the image that is already in there then add the new image once the older image is deleted. Replacing images can sometimes cause issues so doing things Manually is always best.
Make sure that you don't have the image opened up anywhere else, or sent anywhere else that is still open.
Hope the error resolves~