Alerts not working after upgrading JON 2.4 to 3.1

Issue

After upgrading JON 2.4 to 3.1, alerts are no longer triggered correctly. When we try to view the alert definition, the follow error occurs in the web interface

found in the message center com.google.gwt.core.client.JavaScriptException:(TypeError): Cannot call method 'toUpperCase' of null
--- STACK TRACE FOLLOWS ---
(TypeError): Cannot call method 'toUpperCase' of null
   at Unknown.org_rhq_enterprise_gui_coregui_client_alert_AlertFormatUtility_formatAlertConditionForDisplay__Lorg_rhq_core_domain_alert_AlertCondition_2Ljava_lang_String_2(Unknown Source)
   at Unknown.org_rhq_enterprise_gui_coregui_client_alert_AlertDataSource_convert__Lorg_rhq_core_domain_alert_Alert_2Lcom_smartgwt_client_widgets_grid_ListGridRecord_2(Unknown Source)
   at Unknown.org_rhq_enterprise_gui_coregui_client_alert_AlertDataSource_copyValues__Ljava_lang_Object_2Lcom_smartgwt_client_widgets_grid_ListGridRecord_2(Unknown Source)
   at Unknown.org_rhq_enterprise_gui_coregui_client_util_RPCDataSource_copyValues__Ljava_lang_Object_2ZLcom_smartgwt_client_widgets_grid_ListGridRecord_2(Unknown Source)
   at Unknown.org_rhq_enterprise_gui_coregui_client_util_RPCDataSource_$buildRecords__Lorg_rhq_enterprise_gui_coregui_client_util_RPCDataSource_2Ljava_util_Collection_2Z_3Lcom_smartgwt_client_widgets_grid_ListGridRecord_2(Unknown Source)
   at Unknown.org_rhq_enterprise_gui_coregui_client_alert_AlertDataSource_$dataRetrieved__Lorg_rhq_enterprise_gui_coregui_client_alert_AlertDataSource_2Lorg_rhq_core_domain_util_PageList_2Lcom_smartgwt_client_data_DSResponse_2Lcom_smartgwt_client_data_DSRequest_2V(Unknown Source)
   at Unknown.org_rhq_enterprise_gui_coregui_client_alert_AlertDataSource$7_$onSuccess__Lorg_rhq_enterprise_gui_coregui_client_alert_AlertDataSource$7_2Lorg_rhq_core_domain_util_PageList_2V(Unknown Source)
   at Unknown.org_rhq_enterprise_gui_coregui_client_alert_AlertDataSource$7_onSuccess__Ljava_lang_Object_2V(Unknown Source)
   at Unknown.com_google_gwt_user_client_rpc_impl_RequestCallbackAdapter_$onResponseReceived__Lcom_google_gwt_user_client_rpc_impl_RequestCallbackAdapter_2Lcom_google_gwt_http_client_Request_2Lcom_google_gwt_http_client_Response_2V(Unknown Source)
   at Unknown.org_rhq_enterprise_gui_coregui_client_util_rpc_TrackingRequ

The JON server logs shows this error on startup

ERROR [org.rhq.enterprise.server.alert.engine.internal.AlertConditionCacheCoordinator] Error loading global condition cache
java.lang.NullPointerException
    at org.rhq.enterprise.server.alert.engine.internal.AlertConditionCacheUtils.getAlertConditionOperator(AlertConditionCacheUtils.java:66)
    at org.rhq.enterprise.server.alert.engine.internal.GlobalConditionCache.insertAlertConditionComposite(GlobalConditionCache.java:146)
    at org.rhq.enterprise.server.alert.engine.internal.GlobalConditionCache.loadCaches(GlobalConditionCache.java:117)
    at org.rhq.enterprise.server.alert.engine.internal.GlobalConditionCache.<init>(GlobalConditionCache.java:82)
    at org.rhq.enterprise.server.alert.engine.internal.AlertConditionCacheCoordinator.<init>(AlertConditionCacheCoordinator.java:99)
    at org.rhq.enterprise.server.alert.engine.internal.AlertConditionCacheCoordinator.<clinit>(AlertConditionCacheCoordinator.java:62)
    at org.rhq.enterprise.gui.startup.StartupServlet.init(StartupServlet.java:128)
    at javax.servlet.GenericServlet.init(GenericServlet.java:212)
    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:597)
    at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:244)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
    at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:276)
    at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:162)
    at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:115)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1155)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:981)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4069)
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:4362)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:752)
    at org.apache.catalina.core.ContainerBase.access$000(ContainerBase.java:123)
    at org.apache.catalina.core.ContainerBase$PrivilegedAddChild.run(ContainerBase.java:145)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:730)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:553)
    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:597)
    at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:297)
    at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164)
    at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
    at org.apache.catalina.core.StandardContext.init(StandardContext.java:5263)
    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:597)
    at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:297)
    at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164)
    at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
    at org.jboss.web.tomcat.service.TomcatDeployer.performDeployInternal(TomcatDeployer.java:301)
    at org.jboss.web.tomcat.service.TomcatDeployer.performDeploy(TomcatDeployer.java:104)
    at org.jboss.web.AbstractWebDeployer.start(AbstractWebDeployer.java:375)
    at org.jboss.web.WebModule.startModule(WebModule.java:83)
    at org.jboss.web.WebModule.startService(WebModule.java:61)
    at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
    at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
    at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
    at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
    at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
    at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
    at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
    at $Proxy0.start(Unknown Source)
    at org.jboss.system.ServiceController.start(ServiceController.java:417)
    at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
    at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
    at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
    at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
    at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
    at $Proxy42.start(Unknown Source)
    at org.jboss.web.AbstractWebContainer.start(AbstractWebContainer.java:466)
    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:597)
    at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
    at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
    at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
    at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
    at org.jboss.mx.interceptor.DynamicInterceptor.invoke(DynamicInterceptor.java:97)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
    at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
    at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
    at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
    at $Proxy43.start(Unknown Source)
    at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
    at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1015)
    at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)
    at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
    at sun.reflect.GeneratedMethodAccessor42.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
    at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
    at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
    at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
    at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
    at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
    at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
    at $Proxy9.deploy(Unknown Source)
    at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421)
    at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:634)
    at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263)
    at org.jboss.deployment.scanner.AbstractDeploymentScanner.startService(AbstractDeploymentScanner.java:336)
    at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
    at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
    at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
    at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
    at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
    at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
    at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
    at $Proxy0.start(Unknown Source)
    at org.jboss.system.ServiceController.start(ServiceController.java:417)
    at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
    at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
    at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
    at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
    at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
    at $Proxy4.start(Unknown Source)
    at org.jboss.deployment.SARDeployer.start(SARDeployer.java:304)
    at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
    at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)
    at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
    at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:766)
    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:597)
    at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
    at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
    at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
    at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
    at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
    at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
    at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
    at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
    at $Proxy5.deploy(Unknown Source)
    at org.jboss.system.server.ServerImpl.doStart(ServerImpl.java:482)
    at org.jboss.system.server.ServerImpl.start(ServerImpl.java:362)
    at org.jboss.Main.boot(Main.java:200)
    at org.jboss.Main$1.run(Main.java:508)
    at java.lang.Thread.run(Thread.java:662)