Backup from TS-109 to Samsung USB Drive

[Greatstone]

I've had several attempts to backup my TS-109 to a Samsung Story 2TB USB drive. It fails each time with "Job is aborted because one of the destination devices is readonly!" when over 90% completed. The USB drive is formatted as EXT4 and the backup is set up as Realtime Synchronise - though I've tried schedules backup with the same result. I've tried deleting the file it says it fails on and retrying, but it just fails again in another file. This problem has only occurred since I upgraded to firmware 3.5.1 Build 1002T. Any ideas please?

[lamivan]

Just wonder if this problem is resolved because I've got the same issue with my TS-210 trying to perform backup to an External Device (i.e. a 1T USB Drive). It failed randomly during the middle of the backup with the exact error listed below.

2012/04/11 03:03:11 # ERROR: Can't create the "USBDisk2/Backup/Home Videos/1997-09 Lucas (5) 1.mpg" file! (-30)
2012/04/11 03:03:13 The synchronization stopped with errors.
2012/04/11 03:03:13 Sync statistic: Total number of the folders: 1412. Total number of the files: 82788. Total updated size: 279.94 MB. Average updating speed: 1.80 (MB/sec). Time elapsed: 2 minutes 37 seconds
2012/04/11 03:03:19 Job is aborted because one of the destination devices is readonly!


Can anyone help?

Ivan