In the interest of taking one thing at a time,  I took a step back and
built the sample-store-webapp, which my app is derived from. I see
similar issues with this webapp.  In the logs directory I see two
relevant updated files

In the file localhost.2010-02-24.log I see ...
<snip>
24-Feb-2010 13:11:39 org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextDestroyed()
24-Feb-2010 13:11:39 org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextDestroyed()
24-Feb-2010 13:13:23 org.apache.catalina.core.ApplicationContext log
SEVERE: java.lang.ClassCastException:
org.apache.tuscany.sca.assembly.impl.ExtensionImpl cannot be cast to
org.apache.tuscany.sca.contribution.ContributionMetadata
java.lang.IllegalStateException: java.lang.ClassCastException:
org.apache.tuscany.sca.assembly.impl.ExtensionImpl cannot be cast to
org.apache.tuscany.sca.contribution.ContributionMetadata
        at org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:169)
        at 
org.apache.tuscany.sca.host.webapp.ServletHostHelper.createNode(ServletHostHelper.java:178)
        at 
org.apache.tuscany.sca.host.webapp.ServletHostHelper.init(ServletHostHelper.java:140)
        at 
org.apache.tuscany.sca.host.webapp.TuscanyServletFilter.init(TuscanyServletFilter.java:63)
        at 
org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)
        at 
org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)
        at 
org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)
        at 
org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838)
        at 
org.apache.catalina.core.StandardContext.start(StandardContext.java:4488)
        at 
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
        at 
org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:526)
        at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:905)
        at 
org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:740)
        at 
org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:500)
        at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
        at 
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)
        at 
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
        at org.apache.catalina.core.StandardHost.start(StandardHost.java:722)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
        at 
org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
        at 
org.apache.catalina.core.StandardService.start(StandardService.java:516)
        at 
org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:593)
        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.startup.Bootstrap.start(Bootstrap.java:289)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: java.lang.ClassCastException:
org.apache.tuscany.sca.assembly.impl.ExtensionImpl cannot be cast to
org.apache.tuscany.sca.contribution.ContributionMetadata
        at 
org.apache.tuscany.sca.contribution.xml.ContributionMetadataDocumentProcessor.read(ContributionMetadataDocumentProcessor.java:85)
        at 
org.apache.tuscany.sca.contribution.xml.ContributionMetadataDocumentProcessor.read(ContributionMetadataDocumentProcessor.java:1)
        at 
org.apache.tuscany.sca.contribution.processor.DefaultURLArtifactProcessorExtensionPoint$LazyURLArtifactProcessor.read(DefaultURLArtifactProcessorExtensionPoint.java:288)
        at 
org.apache.tuscany.sca.contribution.processor.ExtensibleURLArtifactProcessor.read(ExtensibleURLArtifactProcessor.java:109)
        at 
org.apache.tuscany.sca.contribution.processor.impl.ContributionContentProcessor.read(ContributionContentProcessor.java:152)
        at 
org.apache.tuscany.sca.contribution.processor.impl.ContributionContentProcessor.read(ContributionContentProcessor.java:1)
        at 
org.apache.tuscany.sca.contribution.processor.DefaultURLArtifactProcessorExtensionPoint$LazyURLArtifactProcessor.read(DefaultURLArtifactProcessorExtensionPoint.java:288)
        at 
org.apache.tuscany.sca.deployment.impl.DeployerImpl.loadContribution(DeployerImpl.java:558)
        at 
org.apache.tuscany.sca.node.impl.NodeFactoryImpl.loadContributions(NodeFactoryImpl.java:364)
        at org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:126)
        ... 30 more
24-Feb-2010 13:13:23 org.apache.catalina.core.StandardContext filterStart
SEVERE: Exception starting filter tuscany
javax.servlet.ServletException: java.lang.IllegalStateException:
java.lang.ClassCastException:
org.apache.tuscany.sca.assembly.impl.ExtensionImpl cannot be cast to
org.apache.tuscany.sca.contribution.ContributionMetadata
        at 
org.apache.tuscany.sca.host.webapp.TuscanyServletFilter.init(TuscanyServletFilter.java:67)
        at 
org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)
        at 
org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)
        at 
org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)
        at 
org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838)
        at 
org.apache.catalina.core.StandardContext.start(StandardContext.java:4488)
        at 
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
        at 
org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:526)
        at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:905)
        at 
org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:740)
        at 
org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:500)
        at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
        at 
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)
        at 
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
        at org.apache.catalina.core.StandardHost.start(StandardHost.java:722)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
        at 
org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
        at 
org.apache.catalina.core.StandardService.start(StandardService.java:516)
        at 
org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:593)
        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.startup.Bootstrap.start(Bootstrap.java:289)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: java.lang.IllegalStateException:
java.lang.ClassCastException:
org.apache.tuscany.sca.assembly.impl.ExtensionImpl cannot be cast to
org.apache.tuscany.sca.contribution.ContributionMetadata
        at org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:169)
        at 
org.apache.tuscany.sca.host.webapp.ServletHostHelper.createNode(ServletHostHelper.java:178)
        at 
org.apache.tuscany.sca.host.webapp.ServletHostHelper.init(ServletHostHelper.java:140)
        at 
org.apache.tuscany.sca.host.webapp.TuscanyServletFilter.init(TuscanyServletFilter.java:63)
        ... 27 more
Caused by: java.lang.ClassCastException:
org.apache.tuscany.sca.assembly.impl.ExtensionImpl cannot be cast to
org.apache.tuscany.sca.contribution.ContributionMetadata
        at 
org.apache.tuscany.sca.contribution.xml.ContributionMetadataDocumentProcessor.read(ContributionMetadataDocumentProcessor.java:85)
        at 
org.apache.tuscany.sca.contribution.xml.ContributionMetadataDocumentProcessor.read(ContributionMetadataDocumentProcessor.java:1)
        at 
org.apache.tuscany.sca.contribution.processor.DefaultURLArtifactProcessorExtensionPoint$LazyURLArtifactProcessor.read(DefaultURLArtifactProcessorExtensionPoint.java:288)
        at 
org.apache.tuscany.sca.contribution.processor.ExtensibleURLArtifactProcessor.read(ExtensibleURLArtifactProcessor.java:109)
        at 
org.apache.tuscany.sca.contribution.processor.impl.ContributionContentProcessor.read(ContributionContentProcessor.java:152)
        at 
org.apache.tuscany.sca.contribution.processor.impl.ContributionContentProcessor.read(ContributionContentProcessor.java:1)
        at 
org.apache.tuscany.sca.contribution.processor.DefaultURLArtifactProcessorExtensionPoint$LazyURLArtifactProcessor.read(DefaultURLArtifactProcessorExtensionPoint.java:288)
        at 
org.apache.tuscany.sca.deployment.impl.DeployerImpl.loadContribution(DeployerImpl.java:558)
        at 
org.apache.tuscany.sca.node.impl.NodeFactoryImpl.loadContributions(NodeFactoryImpl.java:364)
        at org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:126)
        ... 30 more
24-Feb-2010 13:13:24 org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextInitialized()
24-Feb-2010 13:13:24 org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextInitialized()
24-Feb-2010 13:14:29 org.apache.catalina.core.ApplicationContext log
SEVERE: java.lang.ClassCastException:
org.apache.tuscany.sca.assembly.impl.ExtensionImpl cannot be cast to
org.apache.tuscany.sca.contribution.ContributionMetadata
java.lang.IllegalStateException: java.lang.ClassCastException:
org.apache.tuscany.sca.assembly.impl.ExtensionImpl cannot be cast to
org.apache.tuscany.sca.contribution.ContributionMetadata
        at org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:169)
        at 
org.apache.tuscany.sca.host.webapp.ServletHostHelper.createNode(ServletHostHelper.java:178)
        at 
org.apache.tuscany.sca.host.webapp.ServletHostHelper.init(ServletHostHelper.java:140)
        at 
org.apache.tuscany.sca.host.webapp.TuscanyServletFilter.init(TuscanyServletFilter.java:63)
        at 
org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)
        at 
org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)
        at 
org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)
        at 
org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838)
        at 
org.apache.catalina.core.StandardContext.start(StandardContext.java:4488)
        at 
org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1251)
        at 
org.apache.catalina.manager.HTMLManagerServlet.start(HTMLManagerServlet.java:612)
        at 
org.apache.catalina.manager.HTMLManagerServlet.doGet(HTMLManagerServlet.java:136)
        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.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:558)
        at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        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:298)
        at 
org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
        at 
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
        at 
org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555)
        at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ClassCastException:
org.apache.tuscany.sca.assembly.impl.ExtensionImpl cannot be cast to
org.apache.tuscany.sca.contribution.ContributionMetadata
        at 
org.apache.tuscany.sca.contribution.xml.ContributionMetadataDocumentProcessor.read(ContributionMetadataDocumentProcessor.java:85)
        at 
org.apache.tuscany.sca.contribution.xml.ContributionMetadataDocumentProcessor.read(ContributionMetadataDocumentProcessor.java:1)
        at 
org.apache.tuscany.sca.contribution.processor.DefaultURLArtifactProcessorExtensionPoint$LazyURLArtifactProcessor.read(DefaultURLArtifactProcessorExtensionPoint.java:288)
        at 
org.apache.tuscany.sca.contribution.processor.ExtensibleURLArtifactProcessor.read(ExtensibleURLArtifactProcessor.java:109)
        at 
org.apache.tuscany.sca.contribution.processor.impl.ContributionContentProcessor.read(ContributionContentProcessor.java:152)
        at 
org.apache.tuscany.sca.contribution.processor.impl.ContributionContentProcessor.read(ContributionContentProcessor.java:1)
        at 
org.apache.tuscany.sca.contribution.processor.DefaultURLArtifactProcessorExtensionPoint$LazyURLArtifactProcessor.read(DefaultURLArtifactProcessorExtensionPoint.java:288)
        at 
org.apache.tuscany.sca.deployment.impl.DeployerImpl.loadContribution(DeployerImpl.java:558)
        at 
org.apache.tuscany.sca.node.impl.NodeFactoryImpl.loadContributions(NodeFactoryImpl.java:364)
        at org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:126)
        ... 26 more
24-Feb-2010 13:14:29 org.apache.catalina.core.StandardContext filterStart
SEVERE: Exception starting filter tuscany
javax.servlet.ServletException: java.lang.IllegalStateException:
java.lang.ClassCastException:
org.apache.tuscany.sca.assembly.impl.ExtensionImpl cannot be cast to
org.apache.tuscany.sca.contribution.ContributionMetadata
        at 
org.apache.tuscany.sca.host.webapp.TuscanyServletFilter.init(TuscanyServletFilter.java:67)
        at 
org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)
        at 
org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)
        at 
org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)
        at 
org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838)
        at 
org.apache.catalina.core.StandardContext.start(StandardContext.java:4488)
        at 
org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1251)
        at 
org.apache.catalina.manager.HTMLManagerServlet.start(HTMLManagerServlet.java:612)
        at 
org.apache.catalina.manager.HTMLManagerServlet.doGet(HTMLManagerServlet.java:136)
        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.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:558)
        at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        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:298)
        at 
org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
        at 
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
        at 
org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555)
        at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.IllegalStateException:
java.lang.ClassCastException:
org.apache.tuscany.sca.assembly.impl.ExtensionImpl cannot be cast to
org.apache.tuscany.sca.contribution.ContributionMetadata
        at org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:169)
        at 
org.apache.tuscany.sca.host.webapp.ServletHostHelper.createNode(ServletHostHelper.java:178)
        at 
org.apache.tuscany.sca.host.webapp.ServletHostHelper.init(ServletHostHelper.java:140)
        at 
org.apache.tuscany.sca.host.webapp.TuscanyServletFilter.init(TuscanyServletFilter.java:63)
        ... 23 more
Caused by: java.lang.ClassCastException:
org.apache.tuscany.sca.assembly.impl.ExtensionImpl cannot be cast to
org.apache.tuscany.sca.contribution.ContributionMetadata
        at 
org.apache.tuscany.sca.contribution.xml.ContributionMetadataDocumentProcessor.read(ContributionMetadataDocumentProcessor.java:85)
        at 
org.apache.tuscany.sca.contribution.xml.ContributionMetadataDocumentProcessor.read(ContributionMetadataDocumentProcessor.java:1)
        at 
org.apache.tuscany.sca.contribution.processor.DefaultURLArtifactProcessorExtensionPoint$LazyURLArtifactProcessor.read(DefaultURLArtifactProcessorExtensionPoint.java:288)
        at 
org.apache.tuscany.sca.contribution.processor.ExtensibleURLArtifactProcessor.read(ExtensibleURLArtifactProcessor.java:109)
        at 
org.apache.tuscany.sca.contribution.processor.impl.ContributionContentProcessor.read(ContributionContentProcessor.java:152)
        at 
org.apache.tuscany.sca.contribution.processor.impl.ContributionContentProcessor.read(ContributionContentProcessor.java:1)
        at 
org.apache.tuscany.sca.contribution.processor.DefaultURLArtifactProcessorExtensionPoint$LazyURLArtifactProcessor.read(DefaultURLArtifactProcessorExtensionPoint.java:288)
        at 
org.apache.tuscany.sca.deployment.impl.DeployerImpl.loadContribution(DeployerImpl.java:558)
        at 
org.apache.tuscany.sca.node.impl.NodeFactoryImpl.loadContributions(NodeFactoryImpl.java:364)
        at org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:126)
        ... 26 more
</snip>




and from catalina-2010-0224.log.....


<snip>
24-Feb-2010 13:14:28 org.apache.tuscany.sca.node.impl.NodeFactoryImpl
loadContributions
INFO: Loading contribution:
file:/C:/Dev/downloads/apache-tomcat-6.0.24-windows-x86/apache-tomcat-6.0.24/webapps/sample-store-webapp/
24-Feb-2010 13:14:29
org.apache.tuscany.sca.contribution.processor.ValidatingXMLStreamReader
[Contribution: 
file:/C:/Dev/downloads/apache-tomcat-6.0.24-windows-x86/apache-tomcat-6.0.24/webapps/sample-store-webapp/,
Artifact: META-INF/sca-contribution.xml] (SchemaError)
SEVERE: XMLSchema validation error occured in:
file:/C:/Dev/downloads/apache-tomcat-6.0.24-windows-x86/apache-tomcat-6.0.24/webapps/sample-store-webapp/META-INF/sca-contribution.xml
,line = 20, column = 1, Message = cvc-elt.1: Cannot find the
declaration of element 'contribution'.
24-Feb-2010 13:14:29
org.apache.tuscany.sca.contribution.processor.ExtensibleStAXArtifactProcessor
[Contribution: 
file:/C:/Dev/downloads/apache-tomcat-6.0.24-windows-x86/apache-tomcat-6.0.24/webapps/sample-store-webapp/,
Artifact: META-INF/sca-contribution.xml] (ElementCannotBeProcessed)
SEVERE: Element {http://www.osoa.org/xmlns/sca/1.0}contribution cannot
be processed. ([row,col,system-id]:
[20,1,"file:/C:/Dev/downloads/apache-tomcat-6.0.24-windows-x86/apache-tomcat-6.0.24/webapps/sample-store-webapp/META-INF/sca-contribution.xml"])
24-Feb-2010 13:14:29
org.apache.tuscany.sca.host.webapp.TuscanyServletFilter init
SEVERE: java.lang.ClassCastException:
org.apache.tuscany.sca.assembly.impl.ExtensionImpl cannot be cast to
org.apache.tuscany.sca.contribution.ContributionMetadata
java.lang.IllegalStateException: java.lang.ClassCastException:
org.apache.tuscany.sca.assembly.impl.ExtensionImpl cannot be cast to
org.apache.tuscany.sca.contribution.ContributionMetadata
        at org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:169)
        at 
org.apache.tuscany.sca.host.webapp.ServletHostHelper.createNode(ServletHostHelper.java:178)
        at 
org.apache.tuscany.sca.host.webapp.ServletHostHelper.init(ServletHostHelper.java:140)
        at 
org.apache.tuscany.sca.host.webapp.TuscanyServletFilter.init(TuscanyServletFilter.java:63)
        at 
org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)
        at 
org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)
        at 
org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)
        at 
org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838)
        at 
org.apache.catalina.core.StandardContext.start(StandardContext.java:4488)
        at 
org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1251)
        at 
org.apache.catalina.manager.HTMLManagerServlet.start(HTMLManagerServlet.java:612)
        at 
org.apache.catalina.manager.HTMLManagerServlet.doGet(HTMLManagerServlet.java:136)
        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.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:558)
        at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        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:298)
        at 
org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
        at 
org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
        at 
org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555)
        at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ClassCastException:
org.apache.tuscany.sca.assembly.impl.ExtensionImpl cannot be cast to
org.apache.tuscany.sca.contribution.ContributionMetadata
        at 
org.apache.tuscany.sca.contribution.xml.ContributionMetadataDocumentProcessor.read(ContributionMetadataDocumentProcessor.java:85)
        at 
org.apache.tuscany.sca.contribution.xml.ContributionMetadataDocumentProcessor.read(ContributionMetadataDocumentProcessor.java:1)
        at 
org.apache.tuscany.sca.contribution.processor.DefaultURLArtifactProcessorExtensionPoint$LazyURLArtifactProcessor.read(DefaultURLArtifactProcessorExtensionPoint.java:288)
        at 
org.apache.tuscany.sca.contribution.processor.ExtensibleURLArtifactProcessor.read(ExtensibleURLArtifactProcessor.java:109)
        at 
org.apache.tuscany.sca.contribution.processor.impl.ContributionContentProcessor.read(ContributionContentProcessor.java:152)
        at 
org.apache.tuscany.sca.contribution.processor.impl.ContributionContentProcessor.read(ContributionContentProcessor.java:1)
        at 
org.apache.tuscany.sca.contribution.processor.DefaultURLArtifactProcessorExtensionPoint$LazyURLArtifactProcessor.read(DefaultURLArtifactProcessorExtensionPoint.java:288)
        at 
org.apache.tuscany.sca.deployment.impl.DeployerImpl.loadContribution(DeployerImpl.java:558)
        at 
org.apache.tuscany.sca.node.impl.NodeFactoryImpl.loadContributions(NodeFactoryImpl.java:364)
        at org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:126)
        ... 26 more
24-Feb-2010 13:14:29 org.apache.catalina.core.StandardContext start
SEVERE: Error filterStart
24-Feb-2010 13:14:29 org.apache.catalina.core.StandardContext start
SEVERE: Context [/sample-store-webapp] startup failed due to previous errors
</snip>

On Wed, Feb 24, 2010 at 12:54 PM, Simon Laws <simonsl...@googlemail.com> wrote:
> Was there further error information in the log files?
>
> Simon
>

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