[Trisquel-users] XFCE install bug

[christian]

Hey guys, I tried using synaptic to add xfce4 and xfce4-goodies and I'm  
having problems, specifically with installing xfce4-session.  The error is as  
follows:

E: /var/cache/apt/archives/xfce4-session_4.10.1-3ubuntu5_amd64.deb: trying to  
overwrite '/etc/xdg/autostart/xscreensaver.desktop', which is also in package  
trisquel-desktop-common-data 7.0-15

Can someone walk me through the install?