First try trashing your prefs. Tried that didn’t work out.
Do you have FXFactory installed? Don’t have FXFactory
Do you have Perian installed? If so, remove it via the sys prefs. Don’t have Perian.
DO you have P2CMS? Nope. That might be a good idea though.
Thanks for helping out. I have never had trouble opening up a folder that I have downloaded from The camera yet. Final Cut is just not liking this folder.