I am trying to transfer things from a Macbook Air to a Macbook Pro Retina. I start up Migration assistant on both and proceed with the initial steps, selecting the source laptop from the target Macbook Pro, then after around 10 seconds on the Macbook Pro I get a screen saying "Migration unexpectedly quit. Please try again."

The Macbook air seems oblivious of any issue and continues in a never ending loading stage. Both have all the updates installed. What can be the issue?

The migration is being done over Wi-Fi and the username and password for the user account is the same on both laptops. iCloud is not enabled on either. Not sure if any of those things are relevant.

  • what are the OS X differences ? – Ruskes Jul 16 '15 at 22:59
  • Both are on 10.10.4 – urok93 Jul 16 '15 at 23:04
  • Do you have to use WiFi? we are talking about Gigabytes of data. – Ruskes Jul 16 '15 at 23:19
  • You can't get fiber optic Wi-Fi, Wi-Fi is wireless networking, there are no cables, fiber optic refers to the internet connection to the internet from your Wi-Fi router. – unknowndomain Jul 16 '15 at 23:37
  • I am using WiFi, Apple says that it's perfectly possible to do the migration this way, and I don't have a cable. support.apple.com/en-us/HT204320 – urok93 Jul 17 '15 at 11:22

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