title: Class not found exception for com/google/appengine/tools/enhancer/Enhance when starting eclipse
body: <p>I did a fresh download of Eclipse Juno and installed Google App Engine SDK.
  After this whenever I start eclipse I get an error </p>
  
  <blockquote>
    <p>Could not find the main class:
    com.google.appengine.tools.enhancer.Enhance. Program will Exit.</p>
  </blockquote>
  
  <p>Edit:
  Looks like there is a Builder that gets added by the Google AppEngine Plugin. Eclipse tries to find this "Builder" and fails.
  I added the path to this builder which resides in plugins\com.google.appengine.eclipse.sdkbundle_1.8.3\appengine-java-sdk-1.8.3\lib to my system classpath. </p>
  
  <p>Now I get a different error</p>
  
  <blockquote>
    <p>DataNucleus Enhancer (version 3.1.1) : Enhancement of classes
    Aug 21, 2013 8:48:14 PM org.datanucleus.metadata.MetaDataManager loadClasses
    SEVERE: Class "in.chimanrao.model.Account" was not found in the CLASSPATH. Please check your specification and your CLASSPATH.
    org.datanucleus.exceptions.ClassNotResolvedException: Class "in.chimanrao.model.Account" was not found in the CLASSPATH. Please check your specification and your CLASSPATH.</p>
  </blockquote>
  
  <p>How do I pass custom classpath to this DataNucleus Enhancer?</p>