Setting up nvidia-experimental-304 (304.48-0ubuntu1) ...
update-initramfs: deferring update (trigger activated)
Traceback (most recent call last):
  File "/usr/bin/quirks-handler", line 26, in <module>
    import Quirks.quirkapplier
  File "/usr/lib/python2.7/dist-packages/Quirks/quirkapplier.py", line 26, in <module>
    import XKit.xutils
ImportError: No module named XKit.xutils
dpkg: error processing nvidia-experimental-304 (--configure):
 subprocess installed post-installation script returned error exit status 1