I had the same problem, even bought a software, that was supposed to be able to help.
But it just helped to view the footage, but importing was still a drama.
So, finally I went to do the project in FCPX sine it can deal with it natively.
i am a big lover of FCP 7 and still have to finish a feature in it,
but honestly, it’s a dead App, therefore the support of newer cameras and codecs does not exist anymore.
Same problem with the support of the C100 and C300 ingestion: Only works in MacOS 10.6.8. in 10.8. they gave up on it and you cannot ingest into FCP 7 anymore.
Greetings,
Sascha Engel
TIME BANDITZ Productions
http://www.youtube.com/taikang