Hi everybody! Just for some background information, I currently have two Macbook Pros. My old one with all my files on it, is a Mid-2009 Macbook Pro 15", running El Capitan, and my recently purchased and received (less than 36 hours ago) 15" Macbook Pro with a Retina Display (1TB HD, 2.5Ghz) running Yosemite. I had brought it into the Apple store to downgrade it from El Capitan, because none of the programs or hardware I use my laptop with for work, were compatible with the new OS. Upon trying to use Migration Assistant, only about 40 gigabytes of my files are transferring, out of the 300 something left from my old laptop. What should I do? I don't have time to order a FireWire cable online, no Apple Stores or Best Buys carry them around me, and I don't know what to do. All my important files are still on my old laptop, and yet they wont transfer, especially my music... So far, I've had the error message saying something along the lines of "Some documents or files could not be transferred" twice after Migration Assistant says that it's completed. In need of help ASAP please! I'm working a corporate event and running audio/video, and without my new files on this Macbook... I am absolutely screwed. Thanks!