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Why won’t Lightroom 4 install on my computer?
Posted by Victoria Bampton on 11 July 2012 05:06 PM
Lightroom 4 has updated minimum system specifications, which are as follows:
For either OS
The main changes are to the operating systems—XP is no longer supported on Windows, and 10.6.8 is the minimum for Mac OS X. Lightroom 4 uses many system API’s which are not available in older operating systems. On Mac, PowerPC and 32-bit Intel processors aren’t supported either, for the same reasons.