[SOLVED] failure in the automatic mounting of USB

[clauslack]

failure in the automatic mounting of USB

Show this error
tinypic.com/r/29qbqli/7

But work fine mount has root in console

mount -t ntfs-3g /dev/sdb1 /mnt/usb

Any Idea
Thanks

[clauslack]

missing assign of plugdev group.

Regards