diff -r 21a47da3d8b8 modules/fxpackager/src/main/java/com/sun/javafx/tools/packager/PackagerLib.java
--- a/modules/fxpackager/src/main/java/com/sun/javafx/tools/packager/PackagerLib.java	Thu Jul 18 15:52:41 2013 -0700
+++ b/modules/fxpackager/src/main/java/com/sun/javafx/tools/packager/PackagerLib.java	Tue Jul 23 23:35:12 2013 -0700
@@ -49,6 +49,8 @@
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.net.URLClassLoader;
+import java.nio.file.Files;
+import java.nio.file.StandardCopyOption;
 import java.security.CodeSigner;
 import java.security.InvalidKeyException;
 import java.security.KeyStore;
@@ -225,8 +227,8 @@
                 applicationJar.getAbsoluteFile().equals(jarToUpdate.getAbsoluteFile())) {
             try {
                 File newInputJar = File.createTempFile("tempcopy", ".jar");
-                newInputJar.delete();
-                jarToUpdate.renameTo(newInputJar);
+                Files.move(jarToUpdate.toPath(), newInputJar.toPath(),
+                           StandardCopyOption.REPLACE_EXISTING);
                 jarToUpdate = newInputJar;
             } catch (IOException ioe) {
                 throw new PackagerException(