Error: 500

<h1>Error: 500</h1>
<h2>Location: /servlet/FileBroker</h2><b>Internal Servlet Error:</b><br><pre>java.lang.NoSuchMethodError: com.extware.extpress.download.DownloadClient.addAssets(ILjava/util/ArrayList;Ljava/lang/String;IILjava/lang/String;Ljava/lang/String;Ljava/lang/String;)V
	at com.extware.broker.FileBrokerClient.logAsDownload(FileBrokerClient.java:34)
	at com.extware.broker.FileBrokerServlet.doPost(FileBrokerServlet.java:112)
	at com.extware.broker.FileBrokerServlet.doGet(FileBrokerServlet.java:42)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405)
	at org.apache.tomcat.core.Handler.service(Handler.java:287)
	at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
	at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:812)
	at org.apache.tomcat.core.ContextManager.service(ContextManager.java:758)
	at org.apache.tomcat.service.connector.Ajp12ConnectionHandler.processConnection(Ajp12ConnectionHandler.java:166)
	at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
	at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
	at java.lang.Thread.run(Thread.java:534)
</pre>