--- old/src/macosx/classes/com/apple/laf/AquaLookAndFeel.java	2014-03-13 16:24:27.000000000 -0700
+++ new/src/macosx/classes/com/apple/laf/AquaLookAndFeel.java	2014-03-13 16:24:27.000000000 -0700
@@ -38,6 +38,7 @@
 import sun.swing.*;
 import apple.laf.*;
 
+@SuppressWarnings("serial") // Superclass is not serializable across versions
 public class AquaLookAndFeel extends BasicLookAndFeel {
     static final String sOldPropertyPrefix = "com.apple.macos."; // old prefix for things like 'useScreenMenuBar'
     static final String sPropertyPrefix = "apple.laf."; // new prefix for things like 'useScreenMenuBar'