Index: src/java/com/thoughtworks/xstream/converters/reflection/CGLIBEnhancedConverter.java
===================================================================
--- src/java/com/thoughtworks/xstream/converters/reflection/CGLIBEnhancedConverter.java	(revision 1568)
+++ src/java/com/thoughtworks/xstream/converters/reflection/CGLIBEnhancedConverter.java	(working copy)
@@ -81,7 +81,7 @@
         writer.setValue(String.valueOf(hasFactory && type.getSuperclass() != Object.class));
         writer.endNode();
         Callback[] callbacks = hasFactory ? ((Factory)source).getCallbacks() : getCallbacks(source);
-        if (callbacks.length > 1) {
+        if (callbacks.length > 1 && callbacks[1] != null) {
             throw new ConversionException("Cannot handle CGLIB enhanced proxies with multiple callbacks");
         }
         boolean isInterceptor = MethodInterceptor.class.isAssignableFrom(callbacks[0].getClass());