In addition to this, another issue. It seems to be a NPE.
If you try to delete a published asset for more than 3 times, you get this: 

AdmincentralUI has encountered an unhandled exception: Unable to invoke method 
onActionTriggered in 
info.magnolia.ui.vaadin.gwt.client.actionbar.rpc.ActionbarServerRpc

LOG: 

***********************

2014-06-18 15:02:46,112 WARN  info.magnolia.dam.DamModule                       
: No MediaType available for mime-type: binary/octet-stream
2014-06-18 15:03:36,203 INFO  
info.magnolia.module.activation.BaseSyndicatorImpl: Exchange: activation 
succeeded [/portal-retail-assets/Homepage/Focus/images--1-]
2014-06-18 15:03:36,567 WARN  info.magnolia.dam.DamModule                       
: No MediaType available for mime-type: binary/octet-stream
2014-06-18 15:04:01,496 WARN  info.magnolia.dam.DamModule                       
: No MediaType available for mime-type: binary/octet-stream
Jun 18, 2014 3:04:02 PM com.vaadin.server.communication.ServerRpcHandler 
parseInvocation
WARNING: RPC call to 
info.magnolia.ui.vaadin.gwt.client.dialog.rpc.OverlayServerRpc.onClosed 
received for connector 179 but no such connector could be found. 
Resynchronizing client.
2014-06-18 15:04:09,564 INFO  
info.magnolia.module.activation.BaseSyndicatorImpl: Exchange: activation 
succeeded [/portal-retail-assets/Homepage/Focus/images--3-]
2014-06-18 15:04:09,928 WARN  info.magnolia.dam.DamModule                       
: No MediaType available for mime-type: binary/octet-stream
2014-06-18 15:04:13,746 INFO  
info.magnolia.module.activation.BaseSyndicatorImpl: Exchange: activation 
succeeded [/portal-retail-assets/Homepage/Focus/download]
2014-06-18 15:04:14,309 WARN  info.magnolia.dam.DamModule                       
: No MediaType available for mime-type: binary/octet-stream
2014-06-18 15:04:22,302 WARN  
lia.dam.app.assets.column.AssetTypeColumnFormatter: Unable to get the file type 
of folder for column
javax.jcr.PathNotFoundException: jcr:content
        at org.apache.jackrabbit.core.NodeImpl$8.perform(NodeImpl.java:2163)
        at org.apache.jackrabbit.core.NodeImpl$8.perform(NodeImpl.java:2157)
        at 
org.apache.jackrabbit.core.session.SessionState.perform(SessionState.java:216)
        at org.apache.jackrabbit.core.ItemImpl.perform(ItemImpl.java:91)
        at org.apache.jackrabbit.core.NodeImpl.getNode(NodeImpl.java:2157)
        at 
info.magnolia.jcr.wrapper.DelegateNodeWrapper.getNode(DelegateNodeWrapper.java:197)
        at 
info.magnolia.jcr.decoration.ContentDecoratorNodeWrapper.getNode(ContentDecoratorNodeWrapper.java:120)
        at 
info.magnolia.jcr.wrapper.DelegateNodeWrapper.getNode(DelegateNodeWrapper.java:197)
        at 
info.magnolia.jcr.decoration.ContentDecoratorNodeWrapper.getNode(ContentDecoratorNodeWrapper.java:120)
        at 
info.magnolia.jcr.wrapper.DelegateNodeWrapper.getNode(DelegateNodeWrapper.java:197)
        at 
info.magnolia.jcr.decoration.ContentDecoratorNodeWrapper.getNode(ContentDecoratorNodeWrapper.java:120)
        at 
info.magnolia.dam.app.assets.column.AssetTypeColumnFormatter.generateCell(AssetTypeColumnFormatter.java:76)
        at com.vaadin.ui.Table.parseItemIdToCells(Table.java:2312)
        at com.vaadin.ui.Table.getVisibleCellsNoCache(Table.java:2173)
        at com.vaadin.ui.Table.refreshRenderedCells(Table.java:1694)
        at com.vaadin.ui.Table.refreshRowCache(Table.java:2639)
        at com.vaadin.ui.Table.containerItemSetChange(Table.java:4445)
        at com.vaadin.ui.TreeTable.containerItemSetChange(TreeTable.java:612)
        at 
info.magnolia.ui.workbench.container.AbstractJcrContainer.fireItemSetChange(AbstractJcrContainer.java:197)
        at 
info.magnolia.ui.workbench.list.ListPresenter.refresh(ListPresenter.java:110)
        at 
info.magnolia.ui.workbench.WorkbenchPresenter.refresh(WorkbenchPresenter.java:261)
        at 
info.magnolia.ui.contentapp.browser.BrowserPresenter$1.onContentChanged(BrowserPresenter.java:160)
        at 
info.magnolia.ui.api.event.ContentChangedEvent.dispatch(ContentChangedEvent.java:88)
        at 
info.magnolia.ui.api.event.ContentChangedEvent.dispatch(ContentChangedEvent.java:44)
        at info.magnolia.event.SimpleEventBus.fireEvent(SimpleEventBus.java:78)
        at 
info.magnolia.event.ResettableEventBus.fireEvent(ResettableEventBus.java:70)
        at 
info.magnolia.event.ResettableEventBus.fireEvent(ResettableEventBus.java:70)
        at 
info.magnolia.ui.framework.action.DeleteAction.onPostExecute(DeleteAction.java:119)
        at 
info.magnolia.ui.framework.action.AbstractCommandAction.executeOnItem(AbstractCommandAction.java:242)
        at 
info.magnolia.ui.framework.action.DeleteAction.executeOnItem(DeleteAction.java:125)
        at 
info.magnolia.ui.framework.action.AbstractMultiItemAction.execute(AbstractMultiItemAction.java:110)
        at 
info.magnolia.ui.framework.action.DeleteAction.execute(DeleteAction.java:113)
        at 
info.magnolia.ui.api.action.AbstractActionExecutor.execute(AbstractActionExecutor.java:78)
        at 
info.magnolia.ui.framework.action.ConfirmationAction$1.onSuccess(ConfirmationAction.java:100)
        at 
info.magnolia.ui.framework.overlay.OverlayPresenter$4.onConfirmation(OverlayPresenter.java:241)
        at sun.reflect.GeneratedMethodAccessor1558.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:508)
        at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:167)
        at 
com.vaadin.server.AbstractClientConnector.fireEvent(AbstractClientConnector.java:969)
        at 
info.magnolia.ui.vaadin.dialog.ConfirmationDialog.confirm(ConfirmationDialog.java:107)
        at 
info.magnolia.ui.vaadin.dialog.ConfirmationDialog$1.buttonClick(ConfirmationDialog.java:76)
        at sun.reflect.GeneratedMethodAccessor1373.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:508)
        at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:167)
        at 
com.vaadin.server.AbstractClientConnector.fireEvent(AbstractClientConnector.java:969)
        at com.vaadin.ui.Button.fireClick(Button.java:368)
        at com.vaadin.ui.Button$1.click(Button.java:57)
        at sun.reflect.GeneratedMethodAccessor1372.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at 
com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:168)
        at 
com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:118)
        at 
com.vaadin.server.communication.ServerRpcHandler.handleBurst(ServerRpcHandler.java:214)
        at 
com.vaadin.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:111)
        at 
com.vaadin.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:91)
        at 
com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:37)
        at 
com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1371)
        at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:238)
        at 
info.magnolia.ui.admincentral.AdmincentralVaadinServlet.service(AdmincentralVaadinServlet.java:131)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
        at 
info.magnolia.cms.filters.ServletDispatchingFilter.doFilter(ServletDispatchingFilter.java:126)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
        at 
info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:65)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.filters.VirtualUriFilter.doFilter(VirtualUriFilter.java:68)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.module.cache.executor.Bypass.processCacheRequest(Bypass.java:58)
        at 
info.magnolia.module.cache.executor.CompositeExecutor.processCacheRequest(CompositeExecutor.java:66)
        at 
info.magnolia.module.cache.filter.CacheFilter.doFilter(CacheFilter.java:153)
        at 
info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:58)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.i18n.I18nContentSupportFilter.doFilter(I18nContentSupportFilter.java:73)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.filters.RangeSupportFilter.doFilter(RangeSupportFilter.java:84)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.security.BaseSecurityFilter.doFilter(BaseSecurityFilter.java:57)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.security.SecurityCallbackFilter.doFilter(SecurityCallbackFilter.java:83)
        at 
info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:58)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.security.LogoutFilter.doFilter(LogoutFilter.java:93)
        at 
info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:58)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.module.templatingkit.filters.SiteMergeFilter.doFilter(SiteMergeFilter.java:112)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.filters.MultiChannelFilter.doFilter(MultiChannelFilter.java:82)
        at 
info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:58)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.module.cache.filter.GZipFilter.doFilter(GZipFilter.java:73)
        at 
info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:58)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
        at 
info.magnolia.cms.security.auth.login.LoginFilter.doFilter(LoginFilter.java:104)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
        at 
info.magnolia.module.devicedetection.filter.DeviceDetectionFilter.doFilter(DeviceDetectionFilter.java:71)
        at 
info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:58)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.filters.ContentTypeFilter.doFilter(ContentTypeFilter.java:103)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.filters.ContextFilter.doFilter(ContextFilter.java:129)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:65)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.SafeDestroyMgnlFilterWrapper.doFilter(SafeDestroyMgnlFilterWrapper.java:106)
        at 
info.magnolia.cms.filters.MgnlFilterDispatcher.doDispatch(MgnlFilterDispatcher.java:66)
        at 
info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:107)
        at 
info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:93)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
        at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
        at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
        at 
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
        at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
        at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
        at 
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
        at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
        at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
        at 
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
        at 
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
        at 
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:315)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:744)
2014-06-18 15:04:22,542 WARN  info.magnolia.dam.DamModule                       
: No MediaType available for mime-type: binary/octet-stream
2014-06-18 15:04:25,966 INFO  
info.magnolia.module.activation.BaseSyndicatorImpl: Exchange: activation 
succeeded [/portal-retail-assets/Homepage/Focus/images--1-]
2014-06-18 15:04:26,029 INFO  info.magnolia.ui.workbench.WorkbenchPresenter     
: Trying to re-sync workbench with no longer existing path 
c01791bd-7ad8-4fec-8a48-4a84224af661 at workspace dam. Will reset path to its 
configured root /.
2014-06-18 15:04:26,476 WARN  info.magnolia.dam.DamModule                       
: No MediaType available for mime-type: binary/octet-stream
2014-06-18 15:04:30,419 ERROR 
.magnolia.ui.admincentral.AdmincentralErrorHandler: AdmincentralUI has 
encountered an unhandled exception.
com.vaadin.server.ServerRpcManager$RpcInvocationException: Unable to invoke 
method onActionTriggered in 
info.magnolia.ui.vaadin.gwt.client.actionbar.rpc.ActionbarServerRpc
        at 
com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:170)
        at 
com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:118)
        at 
com.vaadin.server.communication.ServerRpcHandler.handleBurst(ServerRpcHandler.java:214)
        at 
com.vaadin.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:111)
        at 
com.vaadin.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:91)
        at 
com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:37)
        at 
com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1371)
        at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:238)
        at 
info.magnolia.ui.admincentral.AdmincentralVaadinServlet.service(AdmincentralVaadinServlet.java:131)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
        at 
info.magnolia.cms.filters.ServletDispatchingFilter.doFilter(ServletDispatchingFilter.java:126)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
        at 
info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:65)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.filters.VirtualUriFilter.doFilter(VirtualUriFilter.java:68)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.module.cache.executor.Bypass.processCacheRequest(Bypass.java:58)
        at 
info.magnolia.module.cache.executor.CompositeExecutor.processCacheRequest(CompositeExecutor.java:66)
        at 
info.magnolia.module.cache.filter.CacheFilter.doFilter(CacheFilter.java:153)
        at 
info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:58)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.i18n.I18nContentSupportFilter.doFilter(I18nContentSupportFilter.java:73)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.filters.RangeSupportFilter.doFilter(RangeSupportFilter.java:84)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.security.BaseSecurityFilter.doFilter(BaseSecurityFilter.java:57)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.security.SecurityCallbackFilter.doFilter(SecurityCallbackFilter.java:83)
        at 
info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:58)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.security.LogoutFilter.doFilter(LogoutFilter.java:93)
        at 
info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:58)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.module.templatingkit.filters.SiteMergeFilter.doFilter(SiteMergeFilter.java:112)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.filters.MultiChannelFilter.doFilter(MultiChannelFilter.java:82)
        at 
info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:58)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.module.cache.filter.GZipFilter.doFilter(GZipFilter.java:73)
        at 
info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:58)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
        at 
info.magnolia.cms.security.auth.login.LoginFilter.doFilter(LoginFilter.java:104)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:82)
        at 
info.magnolia.module.devicedetection.filter.DeviceDetectionFilter.doFilter(DeviceDetectionFilter.java:71)
        at 
info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:58)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.filters.ContentTypeFilter.doFilter(ContentTypeFilter.java:103)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.filters.ContextFilter.doFilter(ContextFilter.java:129)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:80)
        at 
info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:65)
        at 
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:89)
        at 
info.magnolia.cms.filters.SafeDestroyMgnlFilterWrapper.doFilter(SafeDestroyMgnlFilterWrapper.java:106)
        at 
info.magnolia.cms.filters.MgnlFilterDispatcher.doDispatch(MgnlFilterDispatcher.java:66)
        at 
info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:107)
        at 
info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:93)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
        at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
        at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
        at 
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
        at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
        at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
        at 
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
        at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
        at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
        at 
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
        at 
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
        at 
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:315)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.GeneratedMethodAccessor1311.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at 
com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:168)
        ... 88 more
Caused by: java.lang.NullPointerException
        at 
info.magnolia.ui.contentapp.browser.BrowserPresenter.executeAction(BrowserPresenter.java:399)
        at 
info.magnolia.ui.contentapp.browser.BrowserPresenter.onActionbarItemClicked(BrowserPresenter.java:331)
        at 
info.magnolia.ui.actionbar.ActionbarPresenter.onActionbarItemClicked(ActionbarPresenter.java:183)
        at 
info.magnolia.ui.vaadin.actionbar.Actionbar$1.onActionTriggered(Actionbar.java:70)
        ... 92 more


*********************

-- 
Context is everything: 
http://forum.magnolia-cms.com/forum/thread.html?threadId=3aa2d333-be3d-43e9-853e-5d05d771a7d4


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