FCP rescue will only restore the settings you already have, though - not do any repairs. So make sure to trash preferences first, reset your preferences the way you like them, *then* run FCP rescue. This will save your current (good) settins so that if this sort of thing happens again you just have to click a box in FCP rescue to fix it.
How to trash preferences? [
www.lafcpug.org]
Also check this in the LAFCPUG FAQ
[
www.lafcpug.org]