colormgr find-device doesn't work

Ubuntu Oneiric Ocelot, colord 0.1.11-1ubuntu

When I try to print I get this error in the CUPSD web page:
Failed to send: org.freedesktop.DBus.Error.AccessDenied:Rejected send message, 1 matched rules; type="method_call", sender=":1.358" (uid=7 pid=26323 comm="EPSON-Epson-Stylus-SX218 10 alvise www.cercassicur") interface="org.freedesktop.ColorManager" member="FindDeviceById" error name="(unset)" requested_reply="0" destination="org.freedesktop.ColorManager" (uid=104 pid=1018 comm="/usr/lib/x86_64-linux-gnu/colord/colord ")

I run the command "colormgr get-devices" to get the Device ID of my printer and then I used that ID with "colormgr find-device ID_printer", it doesn't work because of too few arguments. So i tried to run the same command with a casual word after the ID_printer and it works :)

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: colord 0.1.11-1ubuntu2
ProcVersionSignature: Ubuntu 3.0.0-10.16-generic 3.0.4
Uname: Linux 3.0.0-10-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Thu Sep 8 20:19:49 2011
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110902)
SourcePackage: colord
UpgradeStatus: No upgrade log present (probably fresh install)