I marked the "install sample desktop effects" in the compiz settings of ubuntu tweak and applied it.
i got an extra option in my effects options of the appearance preferences.
But when ever i try to change the desktop effects from 'none' to any other option, it checks for my driver installation and then reports an error saying that "desktop effects could not be enabled"
Also in my hardware drivers, when i try to activate my proprietary driver for my ATI Catalyst, it throws an error saying my driver installation failed.
please refer to attached screenshot. Also attached is the screenshot of the result of my sudo apt-get update which i ran in terminal.