p>
        When using a servlet engine, there are potential CLASSPATH issues, and potential conflicts 
        with existing XML/XSLT libraries. Servlet containers also often use their own classloaders 
        for loading webapps, which can cause bugs and security problems.
      </p>
<a name="N10111"></a><a name="tomcat"></a>
<h3 class="underlined_5">Tomcat</h3>
<p>
          Check Tomcat's documentation for detailed instructions about installing FOP and Cocoon.
          There are known bugs that must be