UBUNTU - remote connection using rdp protocol failure connecting to 12.04

Premise:
I use Ubuntu 12.04 with classical gnome interface ( no unity )

Question:

new install of 12.04 64 bit
 installed vnc4server and xrdp
 trying to connect remotely to it using rdp protocol
 just getting blank screen with my desktop background
 then dialog box saying /usr/bin/compiz "the application has closed unexpectently"
 what can i try to allow me to access my desktop?

answer:

In 12.04 for Gnome-Classic with no effects use:

echo "gnome-session --session=gnome-fallback" > ~/.xsession