Migration assistant is one of Apple’s most valuable utilities. I’ve used it frequently over the years to migrate my user accounts, applications, etc. between two Macs and I’ve never had any problems with it until now.
I picked up a new 13-inch MacBook Air this week and tried to migrate my data from my 2010 13-inch MacBook Air to the new one. Both of my MacBook Airs were running Mac OS X Lion. I wasn’t able to get Migration Assistant to work over a Wi-Fi connection. It just flat-out refused to work, but here is the work around that finally got my data moved to the new MacBook Air.