If you're using a non-controllable device for audio-only capture in Final Cut Pro 5, the capture may fail in some cases, and the following alert message may appear:
"Unable to read the movie just captured"
This can happen if you're performing an audio-only capture from a non-controllable device (like a dedicated FireWire or USB audio interface), while there is also a video camera or deck connected to the computer via FireWire.
You can avoid this issue by simply disconnecting the camera or deck from FireWire while you are capturing audio-only. After your audio is successfully captured, you can connect the camera or deck to FireWire again without worry.
This document will be updated when more information becomes available.