Please Help ! Tomcat 7.0.51 - Not in a valid Comet configuration (use an APR or NIO connector)

[Ronny Shibley]

I am trying to run the Chat Tutorial on spring-server with APR Connection. No matter what i do I keep getting the error below. 

I put the native dll under System32 and I changed my connectors in tomcat server.xml.

  <servlet>

        <servlet-name>gravity</servlet-name>

        <servlet-class>org.granite.gravity.tomcat.GravityTomcatServlet</servlet-class>

        <load-on-startup>1</load-on-startup>

    </servlet>

    <servlet-mapping>

        <servlet-name>gravity</servlet-name>

        <url-pattern>/gravityamf/*</url-pattern> <!--2-->

    </servlet-mapping>

Dec 11, 2014 6:54:56 PM org.apache.catalina.core.StandardWrapperValve invoke

SEVERE: Servlet.service() for servlet [gravity] in context with path [/ChatServer] threw exception [Not in a valid Comet configuration (use an APR or NIO connector)] with root cause

javax.servlet.ServletException: Not in a valid Comet configuration (use an APR or NIO connector)

at org.granite.gravity.tomcat.AbstractCometProcessor.service(AbstractCometProcessor.java:170)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)