I upgraded my firmware to latest version and since then my Timemachhine is broken.
In timemachine the disk shows up (WD_backup - mybookworld-backup), and after entering WD_BAckup - Password I get the error: Time machine has no permission. Error code: OSStatus error 2).
This is an excerpt of my log on the disk:
09/03 13:22:43 WD1-KRISHOME daemon.info afpd[5745]: logout WD_Backup
09/03 13:22:43 WD1-KRISHOME daemon.debug afpd[5745]: ignoring unknown volume option: option:upriv,usedots
09/03 13:22:43 WD1-KRISHOME daemon.debug afpd[5745]: ignoring unknown volume option: option:upriv,usedots
09/03 13:22:43 WD1-KRISHOME daemon.debug afpd[5745]: ignoring unknown volume option: option:upriv,usedots
09/03 13:22:43 WD1-KRISHOME daemon.debug afpd[5745]: ignoring unknown volume option: option:upriv,usedots
09/03 13:22:43 WD1-KRISHOME daemon.debug afpd[5745]: ignoring unknown volume option: option:upriv,usedots
09/03 13:22:43 WD1-KRISHOME daemon.debug afpd[5745]: ignoring unknown volume option: option:upriv,usedots
09/03 13:22:43 WD1-KRISHOME daemon.debug afpd[5745]: ignoring unknown volume option: option:upriv,usedots
09/03 13:22:43 WD1-KRISHOME daemon.debug afpd[5745]: ignoring unknown volume option: option:upriv,usedots
09/03 13:22:43 WD1-KRISHOME daemon.debug afpd[5745]: ignoring unknown volume option: option:upriv,usedots
09/03 13:22:43 WD1-KRISHOME daemon.info afpd[5745]: login WD_Backup (uid 503, gid 1000) AFP3.2
09/03 13:22:43 WD1-KRISHOME daemon.info afpd[5745]: dhx login: WD_Backup
In the mean time I found some workaround by editing the AppleVolumes.default file and added the timemachine folder as share
