I have two BoM items created by me that I was wearing. I replaced the "fabric" texture in one of them. The replacement did not happen, and suddenly I was unable to take the item off. Then the viewer began showing me messages that the item was not in the database. (In Inventory it was still in boldface.) I rebooted with no luck. Then I went to my Marketplace, where these items are included with dresses I sell. Got a delivery, opened the box, and got the same error messages again. (And they still are in boldface in Inventory.) Gone forever? Or maybe they'll be fine tomorrow?