Playing with the messaging system, I entered 'fred' [a non existent user with no match to fred%] in the to: line.  When  I pressed Send, I got the user lookup screen, but with the error window showing with the text "An internal error has occurred".  The error text is given below. [I do not have the smtp gateway set up so the system cannot automatically email the error.]

Regards, Tim

<error-report>

<version>1.6-beta-3</version>

<revision>4887</revision>

<message>An internal application error has occurred.</message>

<exception>

<type>java.lang.NullPointerException</type>

<stackTrace>

<trace>org.openvpms.component.business.service.archetype.helper.DescriptorHelper.getArchetypeDescriptor(DescriptorHelper.java:131)</trace>

<trace>org.openvpms.component.business.service.archetype.helper.IMObjectBean.getArchetype(IMObjectBean.java:1568)</trace>

<trace>org.openvpms.component.business.service.archetype.helper.IMObjectBean.getNode(IMObjectBean.java:1956)</trace>

<trace>org.openvpms.component.business.service.archetype.helper.IMObjectBean.getValues(IMObjectBean.java:409)</trace>

<trace>org.openvpms.component.business.service.archetype.helper.IMObjectBean.getValues(IMObjectBean.java:423)</trace>

<trace>org.openvpms.component.business.service.archetype.helper.IMObjectBean.getRelatedObjectRefs(IMObjectBean.java:1601)</trace>

<trace>org.openvpms.component.business.service.archetype.helper.IMObjectBean.getRelatedObjects(IMObjectBean.java:1588)</trace>

<trace>org.openvpms.component.business.service.archetype.helper.IMObjectBean.getNodeTargetObjects(IMObjectBean.java:921)</trace>

<trace>org.openvpms.component.business.service.archetype.helper.IMObjectBean.getNodeTargetObjects(IMObjectBean.java:808)</trace>

<trace>org.openvpms.web.app.workflow.messaging.ToAddressEditor.getUsers(ToAddressEditor.java:273)</trace>

<trace>org.openvpms.web.app.workflow.messaging.ToAddressEditor.getTo(ToAddressEditor.java:122)</trace>

<trace>org.openvpms.web.app.workflow.messaging.ToAddressEditor.doValidation(ToAddressEditor.java:231)</trace>

<trace>org.openvpms.web.component.property.AbstractModifiable.validate(AbstractModifiable.java:55)</trace>

<trace>org.openvpms.web.component.property.Validator.validate(Validator.java:50)</trace>

<trace>org.openvpms.web.component.edit.Editors.doValidation(Editors.java:284)</trace>

<trace>org.openvpms.web.component.property.AbstractModifiable.validate(AbstractModifiable.java:55)</trace>

<trace>org.openvpms.web.component.property.Validator.validate(Validator.java:50)</trace>

<trace>org.openvpms.web.component.im.edit.AbstractIMObjectEditor.doValidation(AbstractIMObjectEditor.java:479)</trace>

<trace>org.openvpms.web.component.im.edit.act.AbstractActEditor.doValidation(AbstractActEditor.java:164)</trace>

<trace>org.openvpms.web.component.property.AbstractModifiable.validate(AbstractModifiable.java:55)</trace>

<trace>org.openvpms.web.app.workflow.messaging.UserMessageEditDialog.send(UserMessageEditDialog.java:91)</trace>

<trace>org.openvpms.web.app.workflow.messaging.UserMessageEditDialog.onButton(UserMessageEditDialog.java:80)</trace>

<trace>org.openvpms.web.component.dialog.PopupDialog$2.onAction(PopupDialog.java:394)</trace>

<trace>org.openvpms.web.component.event.ActionListener.actionPerformed(ActionListener.java:41)</trace>

<trace>nextapp.echo2.app.button.AbstractButton.fireActionPerformed(AbstractButton.java:135)</trace>

<trace>echopointng.ButtonEx$1.actionPerformed(ButtonEx.java:120)</trace>

<trace>nextapp.echo2.app.button.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:70)</trace>

<trace>echopointng.model.DefaultButtonModelEx.doAction(DefaultButtonModelEx.java:51)</trace>

<trace>echopointng.ButtonEx.processInput(ButtonEx.java:202)</trace>

<trace>nextapp.echo2.app.update.ClientUpdateManager.process(ClientUpdateManager.java:116)</trace>

<trace>nextapp.echo2.app.update.UpdateManager.processClientUpdates(UpdateManager.java:89)</trace>

<trace>nextapp.echo2.webcontainer.ContainerSynchronizeService.renderUpdate(ContainerSynchronizeService.java:471)</trace>

<trace>nextapp.echo2.webrender.service.SynchronizeService.service(SynchronizeService.java:279)</trace>

<trace>nextapp.echo2.webrender.WebRenderServlet.process(WebRenderServlet.java:273)</trace>

<trace>org.openvpms.web.servlet.SpringWebContainerServlet.process(SpringWebContainerServlet.java:148)</trace>

<trace>nextapp.echo2.webrender.WebRenderServlet.doPost(WebRenderServlet.java:189)</trace>

<trace>javax.servlet.http.HttpServlet.service(HttpServlet.java:637)</trace>

<trace>javax.servlet.http.HttpServlet.service(HttpServlet.java:717)</trace>

<trace>org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)</trace>

<trace>org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)</trace>

<trace>org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:343)</trace>

<trace>org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)</trace>

<trace>org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)</trace>

<trace>org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355)</trace>

<trace>org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:78)</trace>

<trace>org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355)</trace>

<trace>org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:187)</trace>

<trace>org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355)</trace>

<trace>org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:97)</trace>

<trace>org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355)</trace>

<trace>org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:79)</trace>

<trace>org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355)</trace>

<trace>org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:149)</trace>

<trace>org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)</trace>

<trace>org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)</trace>

<trace>org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)</trace>

<trace>org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)</trace>

<trace>org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)</trace>

<trace>org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)</trace>

<trace>org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)</trace>

<trace>org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)</trace>

<trace>org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)</trace>

<trace>org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)</trace>

<trace>org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)</trace>

<trace>org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)</trace>

<trace>org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)</trace>

<trace>java.lang.Thread.run(Unknown Source)</trace>

</stackTrace>

</exception>

<freeMemory>381677744</freeMemory>

<totalMemory>518979584</totalMemory>

<maxMemory>518979584</maxMemory>

<properties>

<property name="java.runtime.name" value="Java(TM) SE Runtime Environment"/>

<property name="sun.boot.library.path" value="C:\Program Files\Java\jre7\bin"/>

<property name="java.vm.version" value="23.3-b01"/>

<property name="shared.loader" value=""/>

<property name="java.vm.vendor" value="Oracle Corporation"/>

<property name="java.vendor.url" value="http://java.oracle.com/"/>

<property name="path.separator" value=";"/>

<property name="java.vm.name" value="Java HotSpot(TM) 64-Bit Server VM"/>

<property name="tomcat.util.buf.StringCache.byte.enabled" value="true"/>

<property name="file.encoding.pkg" value="sun.io"/>

<property name="java.util.logging.config.file" value="C:\Program Files\Apache Software Foundation\Tomcat 6.0\conf\logging.properties"/>

<property name="user.script" value=""/>

<property name="user.country" value="AU"/>

<property name="sun.os.patch.level" value="Service Pack 1"/>

<property name="java.vm.specification.name" value="Java Virtual Machine Specification"/>

<property name="user.dir" value="C:\Program Files\Apache Software Foundation\Tomcat 6.0"/>

<property name="java.runtime.version" value="1.7.0_07-b10"/>

<property name="java.awt.graphicsenv" value="sun.awt.Win32GraphicsEnvironment"/>

<property name="java.endorsed.dirs" value="C:\Program Files\Apache Software Foundation\Tomcat 6.0\endorsed"/>

<property name="os.arch" value="amd64"/>

<property name="java.io.tmpdir" value="C:\Program Files\Apache Software Foundation\Tomcat 6.0\temp"/>

<property name="line.separator" value="&#xd;

"/>

<property name="java.vm.specification.vendor" value="Oracle Corporation"/>

<property name="user.variant" value=""/>

<property name="java.util.logging.manager" value="org.apache.juli.ClassLoaderLogManager"/>

<property name="java.naming.factory.url.pkgs" value="org.apache.naming"/>

<property name="os.name" value="Windows 7"/>

<property name="sun.jnu.encoding" value="Cp1252"/>

<property name="org.apache.commons.jxpath.JXPathContextFactory" value="org.openvpms.component.system.common.jxpath.OpenVPMSContextFactoryReferenceImpl"/>

<property name="java.library.path" value="C:\Program Files\Apache Software Foundation\Tomcat 6.0\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Program Files (x86)\Calibre2\;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Windows Live\Shared;C:\Program Files (x86)\Common Files\Roxio Shared\DLLShared\;C:\Program Files (x86)\Common Files\Roxio Shared\OEM\DLLShared\;C:\Program Files (x86)\Common Files\Roxio Shared\OEM\12.0\DLLShared\;C:\Program Files (x86)\Roxio\OEM\AudioCore\;C:\Program Files (x86)\OpenOffice.org 3\program\;C:\Program Files\MySQL\MySQL Server 5.5\bin\;c:\maven\bin;C:\Program Files\SlikSvn\bin;."/>

<property name="sun.awt.enableExtraMouseButtons" value="true"/>

<property name="java.specification.name" value="Java Platform API Specification"/>

<property name="java.class.version" value="51.0"/>

<property name="sun.management.compiler" value="HotSpot 64-Bit Tiered Compilers"/>

<property name="os.version" value="6.1"/>

<property name="user.home" value="C:\Users\openvpms"/>

<property name="user.timezone" value="Australia/Sydney"/>

<property name="catalina.useNaming" value="true"/>

<property name="java.awt.printerjob" value="sun.awt.windows.WPrinterJob"/>

<property name="java.specification.version" value="1.7"/>

<property name="file.encoding" value="Cp1252"/>

<property name="catalina.home" value="C:\Program Files\Apache Software Foundation\Tomcat 6.0"/>

<property name="user.name" value="openvpms"/>

<property name="java.class.path" value="C:\Program Files\Apache Software Foundation\Tomcat 6.0\bin\bootstrap.jar;C:\Program Files\Apache Software Foundation\Tomcat 6.0\bin\tomcat-juli.jar"/>

<property name="java.naming.factory.initial" value="org.apache.naming.java.javaURLContextFactory"/>

<property name="openvpms" value="C:\Program Files\Apache Software Foundation\Tomcat 6.0\webapps\openvpms\"/>

<property name="package.definition" value="sun.,java.,org.apache.catalina.,org.apache.coyote.,org.apache.tomcat.,org.apache.jasper."/>

<property name="java.vm.specification.version" value="1.7"/>

<property name="sun.arch.data.model" value="64"/>

<property name="java.home" value="C:\Program Files\Java\jre7"/>

<property name="java.specification.vendor" value="Oracle Corporation"/>

<property name="user.language" value="en"/>

<property name="awt.toolkit" value="sun.awt.windows.WToolkit"/>

<property name="java.vm.info" value="mixed mode"/>

<property name="java.version" value="1.7.0_07"/>

<property name="java.ext.dirs" value="C:\Program Files\Java\jre7\lib\ext;C:\Windows\Sun\Java\lib\ext"/>

<property name="sun.boot.class.path" value="C:\Program Files\Java\jre7\lib\resources.jar;C:\Program Files\Java\jre7\lib\rt.jar;C:\Program Files\Java\jre7\lib\sunrsasign.jar;C:\Program Files\Java\jre7\lib\jsse.jar;C:\Program Files\Java\jre7\lib\jce.jar;C:\Program Files\Java\jre7\lib\charsets.jar;C:\Program Files\Java\jre7\lib\jfr.jar;C:\Program Files\Java\jre7\classes"/>

<property name="java.vendor" value="Oracle Corporation"/>

<property name="server.loader" value=""/>

<property name="catalina.base" value="C:\Program Files\Apache Software Foundation\Tomcat 6.0"/>

<property name="file.separator" value="\"/>

<property name="java.vendor.url.bug" value="http://bugreport.sun.com/bugreport/"/>

<property name="common.loader" value="${catalina.base}/lib,${catalina.base}/lib/*.jar,${catalina.home}/lib,${catalina.home}/lib/*.jar"/>

<property name="sun.cpu.endian" value="little"/>

<property name="sun.io.unicode.encoding" value="UnicodeLittle"/>

<property name="package.access" value="sun.,org.apache.catalina.,org.apache.coyote.,org.apache.tomcat.,org.apache.jasper.,sun.beans."/>

<property name="sun.desktop" value="windows"/>

<property name="sun.cpu.isalist" value="amd64"/>

</properties>

</error-report>