Unpacking dkms (from .../dkms_2.2.0.3-1.1ubuntu4_all.deb) ...
Selecting previously unselected package fglrx-pxpress.
Unpacking fglrx-pxpress (from .../fglrx-pxpress_0.4_all.deb) ...
Selecting previously unselected package libc6-i386.
Unpacking libc6-i386 (from .../libc6-i386_2.17-93ubuntu4_amd64.deb) ...
Selecting previously unselected package lib32gcc1.
Unpacking lib32gcc1 (from .../lib32gcc1_1%3a4.8.1-10ubuntu8_amd64.deb) ...
Selecting previously unselected package fglrx-updates.
Unpacking fglrx-updates (from .../fglrx-updates_2%3a13.101-0ubuntu3_amd64.deb) ...
Selecting previously unselected package fglrx-amdcccle-updates.
Unpacking fglrx-amdcccle-updates (from .../fglrx-amdcccle-updates_2%3a13.101-0ubuntu3_amd64.deb) ...
Processing triggers for man-db ...
Processing triggers for ureadahead ...
ureadahead will be reprofiled on next reboot
Setting up dkms (2.2.0.3-1.1ubuntu4) ...
Setting up fglrx-pxpress (0.4) ...
dpkg: error processing fglrx-pxpress (--configure):
 subprocess installed post-installation script returned error exit status 1