Hallo!
Fedora Core apparently does not use the devfs system and so the default Gem cannot find my card. I have edited Pixes/videoDV4L.cpp line 195 to use either /dev/dv1394/0 or /dev/raw1394 and in both cases everytime I send the [driver 1< message to pix_video I get a seg fault.
Hm ... that should work ... (but I didn't test it with the latest GEM...) you could also try the [device /dev/dv1394/0( message ...
LG Georg