How to reproduce :

• create a calendar
• an event inthis calendar
• the calendar is displayed in the preview panel > delete it
• the calendar is still in the preview panel > clic inside the calendar preview
  > 2 error occurred :
• unable to check user rights :

  bf7bdf78-97c8-4a3c-8f71-2fd45d67e241
  
  javax.jcr.ItemNotFoundException: bf7bdf78-97c8-4a3c-8f71-2fd45d67e241
      at org.apache.jackrabbit.core.ItemManager.getItemData(ItemManager.java:384)
      at org.apache.jackrabbit.core.ItemManager.getItem(ItemManager.java:328)
      at org.apache.jackrabbit.core.ItemManager.getItem(ItemManager.java:622)
      at org.apache.jackrabbit.core.SessionImpl.getNodeById(SessionImpl.java:536)
      at org.apache.jackrabbit.core.SessionImpl.getNodeByIdentifier(SessionImpl.java:1100)
      at org.ametys.plugins.repository.jcr.SimpleAmetysObjectFactory.getNode(SimpleAmetysObjectFactory.java:167)
      at org.ametys.plugins.repository.jcr.SimpleAmetysObjectFactory.getAmetysObjectById(SimpleAmetysObjectFactory.java:128)
      at org.ametys.plugins.repository.jcr.SimpleAmetysObjectFactory.getAmetysObjectById(SimpleAmetysObjectFactory.java:117)
      at org.ametys.plugins.repository.jcr.SimpleAmetysObjectFactory.getAmetysObjectById(SimpleAmetysObjectFactory.java:58)
      at org.ametys.plugins.repository.AmetysObjectResolver.resolveById(AmetysObjectResolver.java:239)
      at org.ametys.plugins.explorer.calendar.workflow.CalendarWorkflowGenerator.generate(CalendarWorkflowGenerator.java:63)
      at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:579)
      at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:280)
      at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:780)
      at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:414)
      at org.apache.cocoon.components.source.SourceUtil.toSAX(SourceUtil.java:101)
      at org.apache.cocoon.components.source.SourceUtil.parse(SourceUtil.java:321)
      at org.apache.cocoon.sitemap.ContentAggregator.generate(ContentAggregator.java:125)
      at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:579)
      at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:280)
      at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:481)
      at org.apache.cocoon.components.source.impl.SitemapSource.getInputStream(SitemapSource.java:267)
      at org.ametys.runtime.plugins.core.dispatcher.DispatchGenerator._dispatching(DispatchGenerator.java:138)
      at org.ametys.runtime.plugins.core.dispatcher.DispatchGenerator.generate(DispatchGenerator.java:84)
      at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:579)
      at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:280)
      at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:481)
      at org.apache.cocoon.components.treeprocessor.sitemap.SerializeNode.invoke(SerializeNode.java:144)
      at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:47)
      at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:108)
      at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
      at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
      at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
      at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
      at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:236)
      at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:178)
      at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
      at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118)
      at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:47)
      at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:108)
      at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
      at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
      at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
      at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
      at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:236)
      at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:178)
      at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
      at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118)
      at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:47)
      at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:108)
      at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
      at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
      at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
      at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
      at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:236)
      at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:178)
      at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254)
      at org.apache.cocoon.Cocoon.process(Cocoon.java:699)
      at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:1159)
      at org.ametys.runtime.servlet.RuntimeServlet._doService(RuntimeServlet.java:135)
      at org.ametys.runtime.servlet.RuntimeServlet.service(RuntimeServlet.java:92)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
      at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
      at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:390)
      at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
      at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
      at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
      at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
      at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
      at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
      at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
      at org.mortbay.jetty.Server.handle(Server.java:326)
      at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:536)
      at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:930)
      at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:747)
      at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
      at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:405)
      at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
      at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582) 

• we can't retrieve informations from the workflow.

  891e9786-d6e6-40f8-a08d-3f1c1947f1d1
  
  javax.jcr.ItemNotFoundException: 891e9786-d6e6-40f8-a08d-3f1c1947f1d1 
      at org.apache.jackrabbit.core.ItemManager.getItemData(ItemManager.java:384) 
      at org.apache.jackrabbit.core.ItemManager.getItem(ItemManager.java:328) 
      at org.apache.jackrabbit.core.ItemManager.getItem(ItemManager.java:622) 
      at org.apache.jackrabbit.core.SessionImpl.getNodeById(SessionImpl.java:536) 
      at org.apache.jackrabbit.core.SessionImpl.getNodeByIdentifier(SessionImpl.java:1100) 
      at org.ametys.plugins.repository.jcr.SimpleAmetysObjectFactory.getNode(SimpleAmetysObjectFactory.java:167) 
      at org.ametys.plugins.repository.jcr.SimpleAmetysObjectFactory.getAmetysObjectById(SimpleAmetysObjectFactory.java:128) 
      at org.ametys.plugins.repository.jcr.SimpleAmetysObjectFactory.getAmetysObjectById(SimpleAmetysObjectFactory.java:117) 
      at org.ametys.plugins.repository.jcr.SimpleAmetysObjectFactory.getAmetysObjectById(SimpleAmetysObjectFactory.java:58) 
      at org.ametys.plugins.repository.AmetysObjectResolver.resolveById(AmetysObjectResolver.java:239) 
      at org.ametys.plugins.explorer.calendar.workflow.EventWorkflowGenerator.generate(EventWorkflowGenerator.java:69) 
      at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:579) 
      at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:280) 
      at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:481) 
      at org.apache.cocoon.components.source.impl.SitemapSource.getInputStream(SitemapSource.java:267) 
      at org.ametys.runtime.plugins.core.dispatcher.DispatchGenerator._dispatching(DispatchGenerator.java:138) 
      at org.ametys.runtime.plugins.core.dispatcher.DispatchGenerator.generate(DispatchGenerator.java:84) 
      at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:579) 
      at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:280) 
      at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:481) 
      at org.apache.cocoon.components.treeprocessor.sitemap.SerializeNode.invoke(SerializeNode.java:144) 
      at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:47) 
      at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:108) 
      at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69) 
      at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143) 
      at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69) 
      at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93) 
      at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:236) 
      at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:178) 
      at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254) 
      at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118) 
      at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:47) 
      at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:108) 
      at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69) 
      at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143) 
      at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69) 
      at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93) 
      at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:236) 
      at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:178) 
      at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254) 
      at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118) 
      at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:47) 
      at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:108) 
      at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69) 
      at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143) 
      at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69) 
      at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93) 
      at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:236) 
      at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:178) 
      at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:254) 
      at org.apache.cocoon.Cocoon.process(Cocoon.java:699) 
      at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:1159) 
      at org.ametys.runtime.servlet.RuntimeServlet._doService(RuntimeServlet.java:135) 
      at org.ametys.runtime.servlet.RuntimeServlet.service(RuntimeServlet.java:92) 
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) 
      at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) 
      at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:390) 
      at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) 
      at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) 
      at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765) 
      at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418) 
      at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230) 
      at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114) 
      at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) 
      at org.mortbay.jetty.Server.handle(Server.java:326) 
      at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:536) 
      at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:930) 
      at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:747) 
      at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218) 
      at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:405) 
      at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409) 
      at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)