diff --git a/build/build.xml b/build/build.xml
index 9ee6b9ec8..f52d1f639 100755
--- a/build/build.xml
+++ b/build/build.xml
@@ -470,10 +470,13 @@
     </bundleapp>
 
     <!-- The 'keytool' file is deleted by our appbundler. Add it back so that
-	 Android signing works properly. (Not modifying our appbundler since
-	 most of the time that appbundler is used, keytool isn't needed. -->
-    <copy file="${jdk.path.macosx}/Contents/Home/bin/keytool"
-	  todir="macosx/work/Processing.app/Contents/PlugIns/jdk1.7.0_${jdk.update.macosx}.jdk/Contents/Home/jre/bin" />
+	  Android signing works properly. (Not modifying our appbundler since
+	  most of the time that appbundler is used, keytool isn't needed). 
+	  Also, because Ant's copy task does not retain file permissions on Unix systems, 
+	  we need to use <exec executable="cp" ... > instead -->
+    <exec executable="cp">
+      <arg line="${jdk.path.macosx}/Contents/Home/bin/keytool macosx/work/Processing.app/Contents/PlugIns/jdk1.7.0_${jdk.update.macosx}.jdk/Contents/Home/jre/bin"/>
+    </exec>
 
     <copy todir="macosx/work/Processing.app/Contents/Java">
       <fileset dir=".." includes="core/library/**" /> <!-- why this? -->
diff --git a/core/src/processing/opengl/PJOGL.java b/core/src/processing/opengl/PJOGL.java
index da19a93e0..7e2c4e730 100644
--- a/core/src/processing/opengl/PJOGL.java
+++ b/core/src/processing/opengl/PJOGL.java
@@ -172,6 +172,9 @@ public class PJOGL extends PGL {
    */
   protected boolean prevCanDraw = false;
 
+  /** Stores exceptions that ocurred during drawing */
+  protected Exception drawException;
+
   // ........................................................
 
   // JOGL's FBO-layer
@@ -687,31 +690,32 @@ public class PJOGL extends PGL {
 
   @Override
   protected void requestDraw() {
+    drawException = null;
     boolean canDraw = pg.parent.canDraw();
     if (pg.initialized && (canDraw || prevCanDraw)) {
+      drawLatch = new CountDownLatch(1);
+      if (WINDOW_TOOLKIT == AWT) {
+        canvasAWT.display();
+      } else if (WINDOW_TOOLKIT == NEWT) {
+        windowNEWT.display();
+      }
       try {
-        drawLatch = new CountDownLatch(1);
-        if (WINDOW_TOOLKIT == AWT) {
-          canvasAWT.display();
-        } else if (WINDOW_TOOLKIT == NEWT) {
-          windowNEWT.display();
-        }
-        try {
-          drawLatch.await(DRAW_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS);
-        } catch (InterruptedException e) {
-          e.printStackTrace();
-        }
+        drawLatch.await(DRAW_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS);
+      } catch (InterruptedException e) {
+        e.printStackTrace();
+      }
 
-        if (canDraw) prevCanDraw = true;
-        else prevCanDraw = false;
-      } catch (GLException e) {
-        // Unwrap GLException so that only the causing exception is shown.
-        Throwable tr = e.getCause();
-        if (tr instanceof RuntimeException) {
-          throw (RuntimeException)tr;
-        } else {
-          throw new RuntimeException(tr);
-        }
+      if (canDraw) prevCanDraw = true;
+      else prevCanDraw = false;
+    }
+
+    // Throw wherever exception happened during drawing outside the GL thread
+    // to it is properly picked up by the PDE.
+    if (drawException != null) {
+      if (drawException instanceof RuntimeException) {
+        throw (RuntimeException)drawException;
+      } else {
+        throw new RuntimeException(drawException);
       }
     }
   }
@@ -830,7 +834,7 @@ public class PJOGL extends PGL {
               if (frontFBO == null) {
                 // init
                 frontFBO = new FBObject();
-                frontFBO.reset(gl, pg.width, pg.height);
+                frontFBO.reset(gl, pg.width, pg.height, numSamples);
                 frontFBO.attachTexture2D(gl, 0, true);
                 sinkFBO = backFBO.getSamplingSinkFBO();
                 changedFrontTex = changedBackTex = true;
@@ -865,7 +869,11 @@ public class PJOGL extends PGL {
         }
       }
 
-      pg.parent.handleDraw();
+      try {
+        pg.parent.handleDraw();
+      } catch (Exception ex) {
+        drawException = ex;
+      }
       drawLatch.countDown();
     }