diff --git a/stella/src/emucore/Settings.cxx b/stella/src/emucore/Settings.cxx
index ace7a96ec..fdf31b3a4 100644
--- a/stella/src/emucore/Settings.cxx
+++ b/stella/src/emucore/Settings.cxx
@@ -13,7 +13,7 @@
 // See the file "license" for information on usage and redistribution of
 // this file, and for a DISCLAIMER OF ALL WARRANTIES.
 //
-// $Id: Settings.cxx,v 1.101 2006-12-15 16:42:58 stephena Exp $
+// $Id: Settings.cxx,v 1.102 2006-12-15 17:52:03 stephena Exp $
 //============================================================================
 
 #include <cassert>
@@ -25,14 +25,6 @@
 #include "bspf.hxx"
 #include "Settings.hxx"
 
-// Specifies the minimum version of the settings file that's valid
-// for this version of Stella.  If the settings file is too old,
-// the internal defaults are used.
-// For each new release, this should only be bumped if there have been
-// major changes in some settings; changes which could stop Stella from
-// actually working.
-#define MIN_SETTINGS_VERSION "2.3_alpha"
-
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 Settings::Settings(OSystem* osystem)
   : myOSystem(osystem)
diff --git a/stella/src/emucore/Settings.hxx b/stella/src/emucore/Settings.hxx
index d05416217..10df3d141 100644
--- a/stella/src/emucore/Settings.hxx
+++ b/stella/src/emucore/Settings.hxx
@@ -13,7 +13,7 @@
 // See the file "license" for information on usage and redistribution of
 // this file, and for a DISCLAIMER OF ALL WARRANTIES.
 //
-// $Id: Settings.hxx,v 1.28 2006-12-08 16:49:28 stephena Exp $
+// $Id: Settings.hxx,v 1.29 2006-12-15 17:52:03 stephena Exp $
 //============================================================================
 
 #ifndef SETTINGS_HXX
@@ -24,12 +24,19 @@ class OSystem;
 #include "Array.hxx"
 #include "bspf.hxx"
 
+// Specifies the minimum version of the settings file that's valid
+// for this version of Stella.  If the settings file is too old,
+// the internal defaults are used.
+// For each new release, this should only be bumped if there have been
+// major changes in some settings; changes which could stop Stella from
+// actually working.
+#define MIN_SETTINGS_VERSION "2.3_alpha"
 
 /**
   This class provides an interface for accessing frontend specific settings.
 
   @author  Stephen Anthony
-  @version $Id: Settings.hxx,v 1.28 2006-12-08 16:49:28 stephena Exp $
+  @version $Id: Settings.hxx,v 1.29 2006-12-15 17:52:03 stephena Exp $
 */
 class Settings
 {
diff --git a/stella/src/macosx/SettingsMACOSX.cxx b/stella/src/macosx/SettingsMACOSX.cxx
index 99ee622f5..512f1aae5 100644
--- a/stella/src/macosx/SettingsMACOSX.cxx
+++ b/stella/src/macosx/SettingsMACOSX.cxx
@@ -13,7 +13,7 @@
 // See the file "license" for information on usage and redistribution of
 // this file, and for a DISCLAIMER OF ALL WARRANTIES.
 //
-// $Id: SettingsMACOSX.cxx,v 1.13 2006-12-08 16:49:37 stephena Exp $
+// $Id: SettingsMACOSX.cxx,v 1.14 2006-12-15 17:52:03 stephena Exp $
 //============================================================================
 
 #include <cassert>
@@ -27,6 +27,7 @@
 #include "bspf.hxx"
 #include "Console.hxx"
 #include "EventHandler.hxx"
+#include "Version.hxx"
 
 #include "Settings.hxx"
 #include "SettingsMACOSX.hxx"
@@ -56,7 +57,12 @@ void SettingsMACOSX::loadConfig()
   string key, value;
   char cvalue[2048];
   
-  // Write out each of the key and value pairs
+  // Check if the settings plist file is valid
+  prefsGetString("plist_version", cvalue);
+  if(cvalue[0] == 0 || string(cvalue) < string(MIN_SETTINGS_VERSION))
+    return;
+
+  // Read key/value pairs from the plist file
   const SettingsArray& settings = getInternalSettings();
   for(unsigned int i = 0; i < settings.size(); ++i)
   {
@@ -69,6 +75,9 @@ void SettingsMACOSX::loadConfig()
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 void SettingsMACOSX::saveConfig()
 {
+  // Write out plist version
+  prefsSetString("plist_version", STELLA_VERSION);
+
   // Write out each of the key and value pairs
   const SettingsArray& settings = getInternalSettings();
   for(unsigned int i = 0; i < settings.size(); ++i)