** Attachment added: PDF triggering the bug.
http://launchpadlibrarian.net/27785016/fontspec.pdf
** Attachment added: Dependencies.txt
http://launchpadlibrarian.net/27785017/Dependencies.txt
** Bug watch added: Debian Bug tracker #508497
The linked Debian bug appears to describe a similar issue, and includes
this additional PDF displaying the problem. The unknown font tag it
complains of is G1.
In this case, the size markings from the diagrams, as well as many of
the values in the tables (starting on the second page) display in
