diff --git a/app/src/processing/app/Editor.java b/app/src/processing/app/Editor.java
index 02d6b11a3..aa191edf4 100644
--- a/app/src/processing/app/Editor.java
+++ b/app/src/processing/app/Editor.java
@@ -7,7 +7,7 @@
   Copyright (c) 2001-04 Massachusetts Institute of Technology
 
   This program is free software; you can redistribute it and/or modify
-  it under the terms of the GNU General Public License version 2 
+  it under the terms of the GNU General Public License version 2
   as published by the Free Software Foundation.
 
   This program is distributed in the hope that it will be useful,
@@ -649,7 +649,7 @@ public class Editor extends JFrame implements RunnerListener {
 
         URL[] urlList = new URL[archives.length];
         for (int j = 0; j < urlList.length; j++) {
-          urlList[j] = archives[j].toURL();
+          urlList[j] = archives[j].toURI().toURL();
         }
         URLClassLoader loader = new URLClassLoader(urlList);
 
diff --git a/app/src/processing/app/debug/Runner.java b/app/src/processing/app/debug/Runner.java
index 15884e37e..b78ee41c3 100644
--- a/app/src/processing/app/debug/Runner.java
+++ b/app/src/processing/app/debug/Runner.java
@@ -3,7 +3,7 @@
 /*
   Part of the Processing project - http://processing.org
 
-  Copyright (c) 2004-08 Ben Fry and Casey Reas
+  Copyright (c) 2004-09 Ben Fry and Casey Reas
   Copyright (c) 2001-04 Massachusetts Institute of Technology
 
   This program is free software; you can redistribute it and/or modify
@@ -379,11 +379,16 @@ public class Runner implements MessageConsumer {
     //String addr = "localhost:" + (8000 + (int) (Math.random() * 1000));
     //String addr = "" + (8000 + (int) (Math.random() * 1000));
 
-    String commandArgs = Base.isWindows() ?
-      "java -Xrunjdwp:transport=dt_shmem,address=" + addr + ",suspend=y " :
+    String commandArgs =
       "java -Xrunjdwp:transport=dt_socket,address=" + addr + ",suspend=y ";
-    //String commandArgs = "java -agentlib:jdwp=transport=dt_socket,address=" + addr + ",suspend=y ";
-    //String commandArgs = "java -agentlib:jdwp=transport=dt_socket,address=" + addr + ",server=n,suspend=y ";
+    if (Base.isWindows()) {
+      commandArgs =
+        "java -Xrunjdwp:transport=dt_shmem,address=" + addr + ",suspend=y ";
+    } else if (Base.isMacOS()) {
+      commandArgs =
+        "java -d32 -Xrunjdwp:transport=dt_socket,address=" + addr + ",suspend=y ";
+    }
+
     for (int i = 0; i < vmParams.length; i++) {
       commandArgs = addArgument(commandArgs, vmParams[i], ' ');
     }
diff --git a/todo.txt b/todo.txt
index 58d65d0b5..f0a968404 100644
--- a/todo.txt
+++ b/todo.txt
@@ -1,8 +1,11 @@
 0169 pde
 X Erroneous line highlighting is off by one if there is no setup() routine
 X   http://dev.processing.org/bugs/show_bug.cgi?id=1263
+X Auto-format kills Unicode characters
+X   http://dev.processing.org/bugs/show_bug.cgi?id=1312
+X tweaks for Mac OS X Snow Leopard, to force it to run in 32-bit mode
 
-
+_ System.getProperty("sun.arch.data.model").equals("32").
 _ use launch4j when exporting applications for windows?
 
 _ post to web example 
@@ -18,6 +21,28 @@ _   have a means to load them from "teacher" version of p5
 _   figure out how to use the 
 
 
+package processing.app.debug;
+
+import com.sun.jna.Library;
+import com.sun.jna.Native;
+
+public interface CLibrary extends Library {
+  CLibrary INSTANCE = (CLibrary)Native.loadLibrary("c", CLibrary.class);
+    int setenv(String name, String value, int overwrite);
+  String getenv(String name);
+  int unsetenv(String name);
+  int putenv(String string);
+}
+
+and then, in Runner.launch(), right before the vm = launcVirtualMachine(....) line I do:
+
+CLibrary clib = CLibrary.INSTANCE;
+clib.setenv("DYLD_LIBRARY_PATH", "/blah/blah", 1);
+
+It compiles ok, but when I try to run Processing with run.sh, it fails with the following error:
+java.lang.NoClassDefFoundError:  com/sun/jna/Libray
+
+
 _ add proper copyright and license information for all included projects
 _   http://dev.processing.org/bugs/show_bug.cgi?id=1303