Problem deploying a webapp with FCKeditor

   <servlet>
      <servlet-name>Connector</servlet-name>
        <servlet-class>
          net.fckeditor.connector.ConnectorServlet
      </servlet-class>
      <load-on-startup>1</load-on-startup>
    </servlet>
    
    <servlet-mapping>
      <servlet-name>Connector</servlet-name>
      <url-pattern>
        /lib/fckeditor/editor/filemanager/connectors/*
      </url-pattern>
    </servlet-mapping>

[HTTP:101216]Servlet: "Connector" failed to preload on startup in Web application: "application.war". java.lang.NullPointerException at java.io.File.<init>(File.java:194) at net.fckeditor.connector.ConnectorServlet.init(ConnectorServlet.java:82) at javax.servlet.GenericServlet.init(GenericServlet.java:256)