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iTunes 10.4 for Mac: Older media files may require iTunes to reopen in 32-bit mode

Posted in Apple Portable Computers

Symptoms

With iTunes 10.4 or later on OS X Lion, you may get the following alert when attempting to play some older media files:

"This movie requires QuickTime, which is not supported by this version of iTunes."

Products Affected

iTunes 10 for Mac

Resolution

iTunes 10.4 or later on OS X Lion opens by default in 64-bit mode. However, some older media files in your iTunes library may still rely on QuickTime to play, and QuickTime only runs in 32-bit mode. In order to play media that encounters this issue, you will need to open iTunes in 32-bit mode first:

  1. In iTunes, choose Quit iTunes from the iTunes menu.
  2. From the Finder, choose Applications from the Go menu.
  3. Locate iTunes in the window that opens.
    iTunes 10.4 for Mac: Older media files may require iTunes to reopen in 32-bit mode
  4. Click the iTunes icon to select it. Then, choose File > Get Info.
  5. Enable the option to "Open in 32-bit mode."
    iTunes 10.4 for Mac: Older media files may require iTunes to reopen in 32-bit mode
  6. Reopen iTunes.

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Read more http://support.apple.com/kb/TS3771