diff -r 1ee59fe94653 -r 6ac37d80ecb7 vm/src/main/java/org/apidesign/vm4brwsr/Bck2Brwsr.java
--- a/vm/src/main/java/org/apidesign/vm4brwsr/Bck2Brwsr.java	Tue Feb 12 23:30:01 2013 +0100
+++ b/vm/src/main/java/org/apidesign/vm4brwsr/Bck2Brwsr.java	Sat Feb 16 09:26:20 2013 +0100
@@ -68,7 +68,13 @@
     public static void generate(Appendable out, Resources resources, String... classes) throws IOException {
         StringArray arr = StringArray.asList(classes);
         arr.add(VM.class.getName().replace('.', '/'));
-        VM.compile(resources, out, arr);
+        try {
+            ClosureWrapper.produceTo(out, resources, arr);
+        } catch (IOException ex) {
+            throw ex;
+        } catch (Throwable ex) {
+            VM.compile(resources, out, arr);
+        }
     }
     
     /** Generates virtual machine from bytes served by a class loader.