Oracle's JDK 7 installer for the Mac somehow thinks that OS X Yosemite's 10.10 version number is an unsupported version. There's a simple trick to fool the installer by giving it a version number that it expects. Open a Terminal window and edit the file /System/Library/CoreServices/SystemVersion.plist as root/Administrator. If you are familiar with vi , simply run sudo vi /System/Library/CoreServices/SystemVersion.plist . The file should look something like this: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>ProductBuildVersion</key> <string>14A329f</string> <key>ProductCopyright</key> <string>1983-2014 Apple Inc.</string> <key>ProductName</key>
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