When Task Initialization,MWS Restart and throw some Exception

Sorry,My English is not well,
I create some manageBean to manage data,Action,and web service connector,and add reference to these bean to access the taskdata,
I deleted some bean ,action witch I created,I doubt i delete some system bean.

Below the meaning of Chinese characters is Binding expression failure!

<log4j:event logger=“Framework” timestamp=“1341824850383” level=“WARN” thread=“btpool0-7”>
log4j:message</log4j:message>
log4j:NDC</log4j:NDC>
log4j:throwable<![CDATA[java.lang.IllegalStateException at org.mortbay.jetty.servlet.AbstractSessionManager$Session.getAttribute(AbstractSessionManager.java:788 ) at com.webmethods.portal.framework.portletcontainer.portletapi.impl.PortletSessionImpl.getAttribute(PortletSessionImpl.java:57) ....................... </log4j:message>

log4j:message</log4j:message>

Thanks
???

errors.txt (222 KB)