How to run sugar on ArchLinux

[lite li]

Hi,

After I install sugar-unstable on ArchLinux by:
  yaourt sugar-unstable

But I don't know how to run sugar on ArchLinux.

I use sugar-install-bundle installed the EToys activity.

But when I launched EToys by
  sugar-launch org.vpri.EtoysActivity,
I got this error:
  dbus.exceptions.DBusException:
org.freedesktop.DBus.Error.ServiceUnknown: The name org.laptop.Shell
was not prvided by any .service files.

Thanks,
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