Hello everybody, 
we are running a project with Magnolia 5.2.4 (jackrabbit 2.6.4) with Postgres.

We are receiving complains about standard CRUD operations with Content App, 
like asset or pages.
For instances, when you duplicate an image, you receive this exception in Pulse 
(and red notification bar): 

************************
Can't execute repository operation.
property /untitled/untitled0/Immagine-46/mgnl:lastModified: the property cannot 
be saved because it has been modified externally.
************************

The image is succesfully cloned, but.. everytime this error appears.
Are there any known issue with PSQL and Jackrabbit / Magnolia interface?

Many thanks for your hints..
Matteo

This is the log file: 

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

2014-06-18 10:54:32,567 WARN  org.apache.jackrabbit.core.ItemSaveOperation      
: /untitled/untitled0/Immagine-46/mgnl:lastModified: failed to restore 
transient state
2014-06-18 10:54:32,567 WARN  org.apache.jackrabbit.core.ItemSaveOperation      
: /untitled/untitled0/Immagine-46/mgnl:lastModifiedBy: failed to restore 
transient state
2014-06-18 10:54:32,568 ERROR 
ia.jcr.wrapper.MgnlPropertySettingContentDecorator: Failed to update LUD for 
session: session-admin-1571::dam
javax.jcr.InvalidItemStateException: property 
/untitled/untitled0/Immagine-46/mgnl:lastModified: the property cannot be saved 
because it has been modified externally.
        at 
org.apache.jackrabbit.core.PropertyImpl.makePersistent(PropertyImpl.java:161)
        at 
org.apache.jackrabbit.core.ItemSaveOperation.persistTransientItems(ItemSaveOperation.java:849)
        at 
org.apache.jackrabbit.core.ItemSaveOperation.perform(ItemSaveOperation.java:243)
        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.ItemImpl.save(ItemImpl.java:329)
        at 
org.apache.jackrabbit.core.session.SessionSaveOperation.perform(SessionSaveOperation.java:65)
        at 
org.apache.jackrabbit.core.session.SessionState.perform(SessionState.java:216)
        at org.apache.jackrabbit.core.SessionImpl.perform(SessionImpl.java:361)
        at org.apache.jackrabbit.core.SessionImpl.save(SessionImpl.java:812)
        at 
info.magnolia.jcr.wrapper.DelegateSessionWrapper.save(DelegateSessionWrapper.java:297)
        at 
info.magnolia.jcr.wrapper.DelegateSessionWrapper.save(DelegateSessionWrapper.java:297)
        at 
info.magnolia.jcr.wrapper.MgnlPropertySettingContentDecorator$MgnlPropertySettingSessionWrapper.save(MgnlPropertySettingContentDecorator.java:394)
        at 
info.magnolia.jcr.wrapper.DelegateSessionWrapper.save(DelegateSessionWrapper.java:297)
        at 
info.magnolia.jcr.wrapper.DelegateSessionWrapper.save(DelegateSessionWrapper.java:297)
        at 
info.magnolia.audit.MgnlAuditLoggingContentDecoratorSessionWrapper.save(MgnlAuditLoggingContentDecoratorSessionWrapper.java:82)
        at 
info.magnolia.jcr.wrapper.MgnlPropertySettingContentDecorator$MgnlPropertySettingSessionWrapper.save(MgnlPropertySettingContentDecorator.java:409)
        at 
info.magnolia.jcr.wrapper.DelegateSessionWrapper.save(DelegateSessionWrapper.java:297)
        at 
info.magnolia.jcr.wrapper.DelegateSessionWrapper.save(DelegateSessionWrapper.java:297)
        at 
info.magnolia.audit.MgnlAuditLoggingContentDecoratorSessionWrapper.save(MgnlAuditLoggingContentDecoratorSessionWrapper.java:82)
        at 
info.magnolia.dam.app.assets.action.CreateAssetVariantAction.onExecute(CreateAssetVariantAction.java:97)
        at 
info.magnolia.ui.framework.action.AbstractRepositoryAction.execute(AbstractRepositoryAction.java:94)
        at 
info.magnolia.ui.api.action.AbstractActionExecutor.execute(AbstractActionExecutor.java:78)
        at 
info.magnolia.ui.contentapp.browser.BrowserPresenter.executeAction(BrowserPresenter.java:391)
        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)
        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)
        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 10:54:32,573 ERROR 
fo.magnolia.ui.contentapp.browser.BrowserPresenter: An error occurred while 
executing action [createVariant]
info.magnolia.ui.api.action.ActionExecutionException: Can't execute repository 
operation.
property /untitled/untitled0/Immagine-46/mgnl:lastModified: the property cannot 
be saved because it has been modified externally.
        at 
info.magnolia.ui.framework.action.AbstractRepositoryAction.execute(AbstractRepositoryAction.java:104)
        at 
info.magnolia.ui.api.action.AbstractActionExecutor.execute(AbstractActionExecutor.java:78)
        at 
info.magnolia.ui.contentapp.browser.BrowserPresenter.executeAction(BrowserPresenter.java:391)
        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)
        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)
        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: javax.jcr.InvalidItemStateException: property 
/untitled/untitled0/Immagine-46/mgnl:lastModified: the property cannot be saved 
because it has been modified externally.
        at 
org.apache.jackrabbit.core.PropertyImpl.makePersistent(PropertyImpl.java:161)
        at 
org.apache.jackrabbit.core.ItemSaveOperation.persistTransientItems(ItemSaveOperation.java:849)
        at 
org.apache.jackrabbit.core.ItemSaveOperation.perform(ItemSaveOperation.java:243)
        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.ItemImpl.save(ItemImpl.java:329)
        at 
org.apache.jackrabbit.core.session.SessionSaveOperation.perform(SessionSaveOperation.java:65)
        at 
org.apache.jackrabbit.core.session.SessionState.perform(SessionState.java:216)
        at org.apache.jackrabbit.core.SessionImpl.perform(SessionImpl.java:361)
        at org.apache.jackrabbit.core.SessionImpl.save(SessionImpl.java:812)
        at 
info.magnolia.jcr.wrapper.DelegateSessionWrapper.save(DelegateSessionWrapper.java:297)
        at 
info.magnolia.jcr.wrapper.DelegateSessionWrapper.save(DelegateSessionWrapper.java:297)
        at 
info.magnolia.jcr.wrapper.MgnlPropertySettingContentDecorator$MgnlPropertySettingSessionWrapper.save(MgnlPropertySettingContentDecorator.java:394)
        at 
info.magnolia.jcr.wrapper.DelegateSessionWrapper.save(DelegateSessionWrapper.java:297)
        at 
info.magnolia.jcr.wrapper.DelegateSessionWrapper.save(DelegateSessionWrapper.java:297)
        at 
info.magnolia.audit.MgnlAuditLoggingContentDecoratorSessionWrapper.save(MgnlAuditLoggingContentDecoratorSessionWrapper.java:82)
        at 
info.magnolia.jcr.wrapper.MgnlPropertySettingContentDecorator$MgnlPropertySettingSessionWrapper.save(MgnlPropertySettingContentDecorator.java:409)
        at 
info.magnolia.jcr.wrapper.DelegateSessionWrapper.save(DelegateSessionWrapper.java:297)
        at 
info.magnolia.jcr.wrapper.DelegateSessionWrapper.save(DelegateSessionWrapper.java:297)
        at 
info.magnolia.audit.MgnlAuditLoggingContentDecoratorSessionWrapper.save(MgnlAuditLoggingContentDecoratorSessionWrapper.java:82)
        at 
info.magnolia.dam.app.assets.action.CreateAssetVariantAction.onExecute(CreateAssetVariantAction.java:97)
        at 
info.magnolia.ui.framework.action.AbstractRepositoryAction.execute(AbstractRepositoryAction.java:94)
        ... 97 more

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