Adobe Photoshop CC 2014 v.14.xx - Manual (Page 123)

Run Photoshop in 32-bit mode (64-bit Mac OS only)
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In 64-bit versions of Mac OS 10.5 and later, some older, optional plug-ins are available only if Photoshop is running in 32-bit mode:
1. In the Finder, choose Go > Applications.
2. Expand the Photoshop folder. Then right-click the Photoshop application icon, and choose Get Info.
3. In the General section of the Info window, select Open In 32-bit Mode.
4. Close the Info window, and restart Photoshop.
For more information, see 64-bit operating system benefits and limitations in Photoshop .
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