title: ClassNotFoundException for org.openxmlformats.schemas.spreadsheetml.x2006.main.CTWorkbook
body: <p>I get a <code>ClassNotFoundException</code> for </p>
  
  <blockquote>
    <p>org.openxmlformats.schemas.spreadsheetml.x2006.main.CTWorkbook</p>
  </blockquote>
  
  <p>which is contained in </p>
  
  <blockquote>
    <p>poi-ooxml-3.10-FINAL-20140208.jar</p>
  </blockquote>
  
  <p>that I have on my classpath. </p>
  
  <p>Compile and deploy are running fine, but on runtime I get that exception above. Any Idea ?</p>