Comment 3 for bug 55283

smurf,

Firstoff, please use attachments instead of posting complete files as comments.

Your /etc/cups/mime.types looks ok.

The unsupported formats indicate that there must be something missing in your CUPS installation.
Perhaps their is a cups filter missing.
Can you attach your /etc/cups/mime.convs and attach the output of following command:
$ ls -l /usr/lib/cups/filter/

You could try to reinstall cups with following command to see if this solves the problem:
$ sudo apt-get --reinstall install cupsys