Upgraded my NAS from a DS218 to a DS418 and it installed DSM 7.0. Drive Client on OS X Mavericks worked with the DS218 running DSM 6.1, but won't work with DSM 7.0 and the newest version of Drive Client won't run on Mavericks. Is there a version of Drive Client that will work on Mavericks connecting to a NAS running 7.0? If not, can the DS418 be downgraded to run DSM 6.1?