Webchat and Fastpath issue with Openfire 3.9.1

I used Webchat and Fastpath and it was great until I moved to Openfire 3.9.1. At first look it works, but users can't receive my chat acception or rejection. Means they see "You are currently number 1 in the queue. It is estimated that your wait time..." in any case, even I accept or reject. On my side I have no any visible warnings, but the chat window does not open.

The server log told me next:

org.jivesoftware.openfire.container.PluginManager - Error loading plugin: C:\Program Files\Openfire\plugins\webchat

java.lang.NoClassDefFoundError: org/mortbay/jetty/servlet/Context

    at java.lang.Class.getDeclaredConstructors0(Native Method)

    at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)

    at java.lang.Class.getConstructor0(Unknown Source)

    at java.lang.Class.newInstance(Unknown Source)

    at org.jivesoftware.openfire.container.PluginManager.loadPlugin(PluginManager.java :420)

    at org.jivesoftware.openfire.container.PluginManager.access$300(PluginManager.java :80)

    at org.jivesoftware.openfire.container.PluginManager$PluginMonitor.run(PluginManag er.java:1073)

    at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)

    at java.util.concurrent.FutureTask.runAndReset(Unknown Source)

    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301 (Unknown Source)

    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknow n Source)

    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

    at java.lang.Thread.run(Unknown Source)

Caused by: java.lang.ClassNotFoundException: org.mortbay.jetty.servlet.Context

    at java.net.URLClassLoader$1.run(Unknown Source)

    at java.net.URLClassLoader$1.run(Unknown Source)

    at java.security.AccessController.doPrivileged(Native Method)

    at java.net.URLClassLoader.findClass(Unknown Source)

    at java.lang.ClassLoader.loadClass(Unknown Source)

    at java.lang.ClassLoader.loadClass(Unknown Source)

    ... 14 more

 

Openfire 3.9.1 and Webchat runs on the same Win2003 server.

Please help.