Photoshop CS5 can be run as a 64-bit application on Mac OS 10.5.7 and later. Because of the changes to the application, some plug-ins are not available when you run Photoshop CS5 as a 32-bit or 64-bit application.
- Lighting Effects
- Extract (Use Refine Mask under the Selection menu)
- TWAIN (support works on some scanners)
- Video Frames to Layers
- Video Preview
- Send Video Preview to Device
- FireWire DLL
- Legacy Droplets
- Contact Sheet II
- Web Photo Gallery
- Picture Package
To use these plug-ins, run Photoshop CS5 as a 32-bit application. When you are done using the plug-ins, return to working in Photoshop CS5 as a 64-bit application.
To run Photoshop CS5 on Mac OS as a 32-bit application, do the following:
Select the Adobe Photoshop CS5 application file, installed by default in the Applications/Adobe Photoshop CS5 folder.
Choose File > Get Info, and select Open in 32-Bit Mode.
Select Open In 32-Bit Mode. Deselect this option to run Photoshop CS5 in 64-bit mode.
Many older third-party plug-ins run in 32-bit mode in Photoshop CS5. Remember, many of these older plug-ins may not be fully compatible with Photoshop CS5. It's recommended that you contact the plug-in manufacturer to determine if there's an updated version for compatibility with Photoshop CS5.
To determine if a plug-in causes an error or crash, see Troubleshoot plug-ins (Photoshop CS5 and CS4).
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