help with Canon HG10 and FCE 4

I've read everything I can find, and everyone seems to say that FCE 4 should be able to import video from Canon HG10 using the Log and Transfer window. However, when I try this, nothing happens -- nothing shows up in the Log and Transfer window. Not the camcorder, not the files, nothing. I'm using an intel-based iMac. I've got the HG10 in video playback mode. I've got it hooked to the iMac via USB. Frustrated beyond belief. Any help would be greatly appreciated.