Snow leopard Xcode Icon already includes gloss effects not work

gistfile1.txt

As you already got your answer, for users of Xcode 4.2 (Snow leopard) Dinesh's solution won't work. Here you can right-click on the info.plist file, and open as source code.

Look for this, and replace <false/> with <true/> under <key>UIPrerenderedIcon</key>

<dict>
    <key>CFBundlePrimaryIcon</key>
    <dict>
        <key>CFBundleIconFiles</key>
        <array>
            <string>iconNormal.png</string>
            <string>iconRetina.png</string>
        </array>
        <key>UIPrerenderedIcon</key>
        <true/>
    </dict>
</dict>