I also can reproduce the crash. Compiz was working with the nv-driver, but didn't show any effects. Then i enabled the nvidia driver through nvidia-glx and dpkg-reconfigure xserver-xorg. After reboot, compiz crashed.
I also can reproduce the crash. Compiz was working with the nv-driver, but didn't show any effects. Then i enabled the nvidia driver through nvidia-glx and dpkg-reconfigure xserver-xorg. After reboot, compiz crashed.