(Solved) Error: another copy is running ... 1

[effemmeffe]

Every time I try to update my RC2 with xbian-config I get this error, actually ten of that error, from 1 to 10.
I dig a little and discovered it's btrfs that goes wrong, but I don't know how to disable it.
I tried to remove all the snapshots I have with sudo btrfs-auto-snapshot list | grep -v /@$ | grep auto-snap | xargs -L1 sudo btrfs-auto-snapshot destroy but I still get the same error, another copy is running.
I'm stuck, any help, please?