Migration Assistant on MacBook 2008 not seeing MBP 2012

I want to transfer data from my old macbook from 2008 to my newer MacBook Pro from 2012. The MBP sees the old MB, but the old MB is not seeing the MBP- just keeps "searching for other computers" forever. I got a 9 to 6 pin firewire connector to link them, as instructed at the Apple Store. Tried it without the cable just using wireless and same result. Suggestions?