gconf errof

Hello I receiving this error when I starting compiz --replace:



GConf Error: Failed to contact configuration server; the most common 
cause is a missing or misconfigured D-Bus session bus daemon. See 
http://projects.gnome.org/gconf/ for information. (Details -  1: Failed 
to get connection to session: Did not receive a reply. Possible causes 
include: the remote application did not send a reply, the message bus 
security policy blocked the reply, the reply timeout expired, or the 
network connection was broken.)


thank you, Lukas Kypus