I changed as root the Client0_Command in /etc/xdg/xfce4-session/xfce4-session.rc but made a typo.. Result is that I'm getting now a blank desktop with only the Acer search bar. I need to correct the error but the context menu which I activated beforehand to get the terminal program is not working and also alt+F2 is not working. Is there any other way to access the above file? I don't want to make a full recovery just because that.. Thanks a lot for your help Martin