Just installed OpenNMS today, it was working and now I have an error whenever I click surveilance - any help much appreciated

Hi,

Today I  thought as we had some downtime that I would get get opennms
installed and working.

Everything went well and I managed to install opennms in about an hour.

I now get an error whenever I click on "surveilance"

below is the detail of the error

The OpenNMS Web User Interface Has Experienced an Error

The OpenNMS web UI has encountered an error that it does not know how to
handle.

Possible causes could be that the database is not responding, the OpenNMS
application has stopped or is not running, or there is an issue with the
servlet container.

Please bring this message to the attention of the person responsible for
maintaining OpenNMS for your organization, and have him or her check that
OpenNMS, the external servlet container (if applicable), and the database
are all running without errors.

To reveal details of the error encountered and instructions for reporting
it, click *here*.
Error Details

Please include the information below when reporting problems.
Exception Trace

org.springframework.orm.ObjectRetrievalFailureException
	at org.opennms.web.svclayer.support.DefaultSurveillanceService$SurveillanceView.getOnmsCategoriesFromViewCategories(DefaultSurveillanceService.java:305)
	at org.opennms.web.svclayer.support.DefaultSurveillanceService$SurveillanceView.getCategoriesForColumn(DefaultSurveillanceService.java:292)
	at org.opennms.web.svclayer.support.DefaultSurveillanceService$VeryLowMemCellStatusStrategy.calculateCellStatus(DefaultSurveillanceService.java:234)
	at org.opennms.web.svclayer.support.DefaultSurveillanceService.createSurveillanceTable(DefaultSurveillanceService.java:365)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
	at $Proxy80.createSurveillanceTable(Unknown Source)
	at org.opennms.web.controller.SurveillanceViewController$1.run(SurveillanceViewController.java:145)



Request Details  Locale en_GB  Method GET  Path Info null  Path Info
(translated) null  Protocol HTTP/1.1  URI
/opennms/errors/unknownexception.jsp  URL
http://192.168.0.211:8980/opennms/errors/unknownexception.jsp  Scheme
http  Server
Name 192.168.0.211  Server Port 8980  System Details OpenNMS Version:
1.8.12  Java
Version: 1.5.0_17 Sun Microsystems Inc.  Java Virtual Machine: 1.5.0_17-b04
Sun Microsystems Inc.  Operating System: Linux 2.6.32-28-generic-pae
(i386)  Servlet
Container: jetty/6.1.24 (Servlet Spec 2.5)  User Agent: Mozilla/5.0 (Windows
NT 6.1; WOW64; rv:2.0.1) Gecko/20100101 Firefox/4.0.1

######.....


I have checked that the database is running and that I can access it using
the following command

# psql -U postgres --host=localhost opennms

I get the opennms# prompt.

I have checked that the opennms is running ps -ef | grep opennms

I have restarted the database and the opennms service, and rebooted the
server.
But I still get an error.

Can someone point me in the right direction to resolve the problem.

I am a newbie to opennms, so be gentle with me ;-)

Thanks in advance
Andy

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