title: Error with ClassEnhancer "ASM"
body: <p>I need some help! I have re-installed Eclipse and the latest GWT SDK 2.5.1/App Engine SDK 1.8.4 and my previously working app is not working any more. I cannot find the way out. </p>
  
  <p>As far as I could figure out it has something to do with the maven dependency. Can I remove it? How?
  I believe it is simple. Please help! </p>
  
  <p>Here is the log:</p>
  
  <pre><code>sep 10, 2013 9:40:01 PM org.datanucleus.enhancer.DataNucleusEnhancer addMessage
  SEVERE: An error occured for ClassEnhancer "ASM" when trying to call the method "org.datanucleus.enhancer.asm.ASMClassEnhancer" on class "getClassNameForFileName" : class org.datanucleus.enhancer.asm.ASMClassEnhancer$MyClassVisitor has interface org.objectweb.asm.ClassVisitor as super class
  java.lang.IncompatibleClassChangeError: class org.datanucleus.enhancer.asm.ASMClassEnhancer$MyClassVisitor has interface org.objectweb.asm.ClassVisitor as super class
  at java.lang.ClassLoader.defineClass1(Native Method)
  at java.lang.ClassLoader.defineClass(Unknown Source)
  at java.security.SecureClassLoader.defineClass(Unknown Source)
  at java.net.URLClassLoader.defineClass(Unknown Source)
  at java.net.URLClassLoader.access$100(Unknown Source)
  at java.net.URLClassLoader$1.run(Unknown Source)
  at java.net.URLClassLoader$1.run(Unknown Source)
  at java.security.AccessController.doPrivileged(Native Method)
  at java.net.URLClassLoader.findClass(Unknown Source)
  at java.lang.ClassLoader.loadClass(Unknown Source)
  at com.google.appengine.tools.enhancer.EnhancerLoader.loadClass(EnhancerLoader.java:107)
  at java.lang.ClassLoader.loadClass(Unknown Source)
  at org.datanucleus.enhancer.asm.ASMClassEnhancer.getClassNameForFileName(ASMClassEnhancer.java:152)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
  at java.lang.reflect.Method.invoke(Unknown Source)
  at org.datanucleus.enhancer.DataNucleusEnhancer.getClassNameForFilename(DataNucleusEnhancer.java:920)
  at org.datanucleus.enhancer.DataNucleusEnhancer.getFileMetadataForInput(DataNucleusEnhancer.java:736)
  at org.datanucleus.enhancer.DataNucleusEnhancer.enhance(DataNucleusEnhancer.java:545)
  at org.datanucleus.enhancer.DataNucleusEnhancer.main(DataNucleusEnhancer.java:1252)
  </code></pre>