Comment 6 for bug 462453

Have similar problem on Ubuntu 9.10 with latest updates.
Found solution:

There is no file /dev/raw1394 (driver is not loaded)!

$ sudo modprobe raw1394

After this check your permissions on device /dev/raw1394
You must have rw access to this device!
For me it looks like:

$ ls -la /dev/raw1394

crw-rw---- 1 root root 171, 0 2009-10-30 11:34 /dev/raw1394

On my Ubuntu 9.04 system this looks like:

crw-rw---- 1 root disk 171, 0 2009-10-30 11:34 /dev/raw1394