Well Maarten,
I'm assuming you're referring to the editable version, though I'm not
sure why the English version (say) has had its text converted to paths
(font issues?). Sure, I can try that and see.
As a side note, you've got some serious licensing issues there: you
can't just "add" licenses - CC-BY has to go as a start - and assuming
we're calling this a derivative of all of the source files you're in
fact into illegal territory because the GPL isn't compatible with a
CC-BY-SA license AFAIK.
Regards,
Harry