I experienced this twice this month with two different customers. What happens is certain folders with excell and word docs will be moved inside other folders and the files will be gone only some random character file.tmp The first incident happend on a synology diskstation DS213 Shared Drive where the only fix was to reset the Diskstation and restore from backup. The second incident was on a Windows Home server share. Both computers are windows 7 pro 64 with office 2013. Im starting to think this is a bug with office 2013. I scanned for viruses and none found. Where do i start to resolve this?