When naming folders to put footage from P2 cards into on the backup drive, avoid using symbols like #, &, /, @…pretty much any of the symbols above the numbers and next to the shift key. While the Mac will recognize the folders just fine, FCP won’t. FCP has issues with those symbols in general, so avoid them.
A buddy of mine, (Patrick Sheffield, the guy who invented the Popsicle Raid) tonight went to import footage from folders labelled thus:
When he selected the card all the thumbnails appeared, but when he tried to import he got an error. He called the camera assistant and the assistant said that they imported fine off the card. So that set his mind to thinking…what was different? The folder that contained the CONTENTS and LASTCLIP.txt. Then he saw the #…a-HA!
Label your folders Card 01 or B001.