I have upgraded ZCM from 11.3 TO 11.4.2 (Windows 2008 r2, with SQL server), with some issues. One of those issues was duplicate jar files in c:\program files(x86)\novell\zenworks\lib\bin which has been fixed as far as I can tell. I have since discovered I am not able to access any inventory page, run reports or create reports. I get the following web page error. Can anyone suggest where to begin with such an error below? I have opened an SR but not getting much traction with it at the moment.

HTTP Status 500 - javax.servlet.ServletException: Servlet execution threw an exception

type: Exception report
message: javax.servlet.ServletException: Servlet execution threw an exception

exception:
javax.servlet.ServletException: Servlet execution threw an exception:
com.patchlink.sapphire.web.pages.vulenerability.se ssion.HibernateSessionFilter.dofilter(HibernateSes sionFilter.java:95)

root cause:
javax.servlet.ServletException: Servlet execution threw an exception
org.apache.tomcat.websocket.server.Wsfilter.doFilt er(WsFilter.java:52)
com.patchlink.sapphire.web.pages.vulenerability.se ssion.HibernateSessionFilter.dofilter(HibernateSes sionFilter.java:75)

root cause:
java.lang.NoClassDefFoundError: Could not initialize class
com.novell.zenworks.inventory.utils.DBConnection
com.novell.zenworks.inventory.rtrlet.Rtrlet.doGet( Rtrlet.java:327)
javax.servlet.http.HttpServlet.service(HttpServlet .java:624)
javax.servlet.http.HttpServlet.service(HttpServlet .java:731)
org.apache.tomcat.websocket.server.WsFilter.doFilt er(WsFilter.java:52)
com.patchlink.sapphire.web.pages.vulenrability.ses sion.HibernateSessionFilter.doFilter(HibernateSess ionFilter.java:75)

note
the full stack trace of the root cause is available in the Apache Tomcat/7.0.68 logs.