title: Project Error (Eclipse) when creating Google Cloud Endpoint in GAE
body: <p>I created a simple project with GAE and i put in my package 'model' the PMF.java (Persistence Manager Factory Class) and a class (Employee.java).
  After right-clicking the Employee class on Google->Generate Cloud Endpoint Class, the plugin correctly generate my EmployeeEndpoint, but after created that it appears an error on:</p>
  
  <pre><code>war-&gt;WEB-INF-&gt;lib
  </code></pre>
  
  <p>for this jar:</p>
  
  <pre><code>appengine-api-labs.jar
  appengine-endpoints.jar
  appengine-endpoints-deps.jar
  </code></pre>
  
  <p>And opening the ErrorLog of Eclipse, it just says:</p>
  
  <pre><code>An exception stack trace is not available
  </code></pre>
  
  <p>So clicking on the project to: Google->Generate Cloud Endpoint Client Library an error appears:</p>
  
  <pre><code>Error in Generating Client Libraries
  </code></pre>
  
  <p>with this message:</p>
  
  <pre><code>An error occurred when attempting to generate the client libraries
  </code></pre>
  
  <p>So, now that i'm facing this error, what could i do to solve the problem? Thank you so much in advance</p>
  
  <p>[EDIT Error Log]:</p>
  
  <pre><code>Message:
  Unexpected Exception
  
  
  Exception Stack Trace:
  
  java.lang.reflect.InvocationTargetException
      at com.google.gdt.eclipse.appengine.swarm.wizards.GenerateSwarmApiAction$1.run(GenerateSwarmApiAction.java:82)
      at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)
  Caused by: java.lang.ClassNotFoundException: com.google.api.server.spi.tools.ClientLibGenerator$Language
      at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
      at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
      at com.google.gdt.eclipse.appengine.swarm.wizards.helpers.SwarmApiCreator.createClientLibFromApiConfig(SwarmApiCreator.java:113)
      at com.google.gdt.eclipse.appengine.swarm.wizards.helpers.SwarmApiCreator.createSwarmApi(SwarmApiCreator.java:258)
      at com.google.gdt.eclipse.appengine.swarm.wizards.helpers.SwarmServiceCreator.create(SwarmServiceCreator.java:444)
      at com.google.gdt.eclipse.appengine.swarm.wizards.GenerateSwarmApiAction$1.run(GenerateSwarmApiAction.java:80)
      ... 1 more
  </code></pre>