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While looking at this problem again, I counted the number of GUID bytes. There should be eight, but there are only seven.

Perhaps your camera GUIDs have a leading zero byte. Try opening them like this:

rosrun camera1394 camera1394_node _guid:=00b09d01008fe780

I think that will work. If so, we should fix the driver to print GUIDs with the appropriate number of leading zeros.

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