I have Ubuntu 12.04 and ooo-thumbnailer does not work. I have installed it from the above ppa and restarted nautilus, of course, but no thumbnails whatsoever are created.
When I call ooo-thumbnailer from the command line I gen the following:
convert convert: Improper image header (/tmp/gmJ6Jks5).
It is something it has to do with the imagemagick convert utility. I have installed the graphics-imagemagick-compat package, but I also tried to substitute that with the imagemagick package. In this case ooo-thumbnailer still doesn't work but the error code is different (I don't recall precisely now).
I also tried to compile ooo-thumbnailer and imagemagick from source with no success.
Anyone knows what the problem might be? Thanks