I recently upgraded my MacBook Pro to Snow Leopard, but the computer has some hardware problems and I need to send it in for repair (it won't wake up or boot). It is entirely backed up with Time Machine, and I would like to transfer the calendar and contact data from it to my PowerBook that is running OS X 10.4. I managed to export an icbu file (iCal) and abbu (Address Book) file from the MBP, but when I try to add them to the PB's iCal and Address Book, I get an error message. The raw data in the Library folder seem to be in a different format as well. Is there any other way to transfer the data?