WD MyBook World Edition II - Time Machine konnte das Backup nicht abschließen

Hallo zusammen,

ich habe eine WD MyBook World Edition II für Backups via Time Machine. Nach einem Firmware Update auf 01.02.14 lief das Time Machine Backup bisher eigentlich gut, außer dass er öfters mal ein komplett neues Backup erstellen musste (war unter Lion nicht so oft). Nun aber kommt seit kurzem die folgende Fehlermeldung sobald ein Backup erstellt werden soll:

Time Machine konnte das Backup … nicht abschließen

Das Backup konnte nicht abgeschlossen werden. Beim Erstellen des Backup-Ordners ist ein Fehler aufgetreten.

Wenn ich das Backup manuell anstoße und mir /var/log/system.log anschaue (tail -f system.log), erscheinen hier folgende Einträge:

Dec 26 23:05:44 mbp2.fritz.box com.apple.backupd[7346]: Starting manual backup
Dec 26 23:05:44 mbp2.fritz.box com.apple.SecurityServer[15]: Succeeded authorizing right ‘com.apple.ServiceManagement.daemons.modify’ by client ‘/usr/libexec/UserEventAgent’ [11] for authorization created by ‘/usr/libexec/UserEventAgent’ [11] (100012,0)
Dec 26 23:05:44 mbp2.fritz.box com.apple.backupd[7346]: Attempting to mount network destination URL: afp://WD_Backup@MyNas.local/WD_Backup
Dec 26 23:05:49 mbp2 kernel[0]: ASP_TCP CheckReqQueueSize: increasing req queue from 32 to 128 entries. so 0xffffff8011ff6130
Dec 26 23:06:20 mbp2.fritz.box mdworker[7351]: Unable to talk to lsboxd
Dec 26 23:06:20 mbp2.fritz.box mdworker[7352]: Unable to talk to lsboxd
Dec 26 23:06:20 mbp2.fritz.box sandboxd[7353] ([7351]): mdworker(7351) deny mach-lookup com.apple.ls.boxd
Dec 26 23:06:20 mbp2.fritz.box sandboxd[7353] ([7352]): mdworker(7352) deny mach-lookup com.apple.ls.boxd
Dec 26 23:06:20 mbp2 kernel[0]: Sandbox: sandboxd(7353) deny mach-lookup com.apple.coresymbolicationd
Dec 26 23:06:44 mbp2.fritz.box com.apple.backupd[7346]: Mounted network destination at mount point: /Volumes/WD_Backup-1 using URL: afp://WD_Backup@MyNas.local/WD_Backup
Dec 26 23:06:44 mbp2 kernel[0]: ASP_TCP asp_tcp_usr_control: invalid kernelUseCount 0
Dec 26 23:06:44 mbp2 kernel[0]: AFP_VFS afpfs_mount: /Volumes/WD_Backup-1, pid 7348
Dec 26 23:06:44 mbp2 kernel[0]: AFP_VFS afpfs_mount : succeeded on volume 0xffffff806dc3c008 /Volumes/WD_Backup-1 (error = 0, retval = 0)
Dec 26 23:06:59 mbp2.fritz.box com.apple.SecurityServer[15]: Succeeded authorizing right ‘com.apple.ServiceManagement.daemons.modify’ by client ‘/usr/libexec/UserEventAgent’ [11] for authorization created by ‘/usr/libexec/UserEventAgent’ [11] (100012,0)
Dec 26 23:07:34 mbp2.fritz.box mds[71]: (Error) Volume: Root store set to FSOnly with matching create! (loaded:1)
Dec 26 23:07:35 mbp2.fritz.box com.apple.backupd[7346]: Disk image /Volumes/WD_Backup-1/mbp2.sparsebundle mounted at: /Volumes/Time Machine-Backups
Dec 26 23:07:35 mbp2.fritz.box com.apple.backupd[7346]: Backing up to: /Volumes/Time Machine-Backups/Backups.backupdb
Dec 26 23:07:36 mbp2.fritz.box com.apple.backupd[7346]: Error: (-36) Applying backup protections to /Volumes/Time Machine-Backups/Backups.backupdb/mbp2/2012-12-26-230736.inProgress
Dec 26 23:07:36 mbp2.fritz.box com.apple.backupd[7346]: Error: (5) setxattr for key:com.apple.backupd.SnapshotContainer path:/Volumes/Time Machine-Backups/Backups.backupdb/mbp2/2012-12-26-230736.inProgress size:16
Dec 26 23:07:36 mbp2.fritz.box com.apple.backupd[7346]: Failed to make snapshot container.
Dec 26 23:07:47 mbp2.fritz.box com.apple.SecurityServer[15]: Succeeded authorizing right ‘com.apple.ServiceManagement.daemons.modify’ by client ‘/usr/libexec/UserEventAgent’ [11] for authorization created by ‘/usr/libexec/UserEventAgent’ [11] (100012,0)
Dec 26 23:07:48 mbp2.fritz.box com.apple.backupd[7346]: Backup failed with error: 2
Dec 26 23:07:48 mbp2.fritz.box com.apple.backupd[7346]: Ejected Time Machine disk image: /Volumes/WD_Backup-1/mbp2.sparsebundle
Dec 26 23:07:49 mbp2.fritz.box com.apple.backupd[7346]: Ejected Time Machine network volume.
Dec 26 23:07:49 mbp2 kernel[0]: AFP_VFS afpfs_unmount: /Volumes/WD_Backup-1, flags 0, pid 7386
Dec 26 23:07:49 mbp2 kernel[0]: AFP_VFS afpfs_unmount : We are the last mnt/sbmnt using volume /Volumes/WD_Backup-1 0xffffff806dc3c008
Dec 26 23:07:49 mbp2 kernel[0]: ASP_TCP do_thread_read: no reqInfo found for reqID 0
Dec 26 23:07:49 mbp2 kernel[0]: AFP_VFS afpfs_unmount : We are the last volume using socket /Volumes/WD_Backup-1 0xffffff806dc3c008
Dec 26 23:07:49 mbp2 kernel[0]: AFP_VFS afpfs_unmount : afpfs_DoReconnect sent signal for unmount to proceed
Dec 26 23:07:50 mbp2.fritz.box com.apple.SecurityServer[15]: Succeeded authorizing right ‘system.hdd.smart’ by client ‘/Library/Application Support/iStat local/iStatLocalDaemon’ [91] for authorization created by ‘/Library/Application Support/iStat local/iStatLocalDaemon’ [91] (B,0)

Kann mir jemand helfen, was ich machen muss, damit Time Machine wieder funktioniert?

Danke und Grüße

Florian