java.lang.NoClassDefFoundError: Could not initialize class com.remedy.arsys.session.Login

[Blair, Darren]

Hi,
                I just upgraded both the AR Server and Mid-tier from version 
7.1 to 8.0 which also upgraded Apache Tomcat from 5.5 to 6.02.  I am now 
getting the below error in the tomcat log when trying to access the site.

Dec 5, 2012 4:50:24 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet HomeServlet threw exception
java.lang.NoClassDefFoundError: Could not initialize class 
com.remedy.arsys.session.Login
                at com.remedy.arsys.stubs.GoatServlet.postInternal(Unknown 
Source)
                at com.remedy.arsys.stubs.GoatHttpServlet.doGet(Unknown Source)
                at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
                at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
                at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
                at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
                at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
                at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
                at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
                at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
                at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
                at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
                at 
org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
                at 
org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
                at 
org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:769)
                at 
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:698)
                at 
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:891)
                at 
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
                at java.lang.Thread.run(Unknown Source)

Any ideas why this may be happening?

Thanks,
Darren

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