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[protege-discussion] Problems when using WebProtege: java.rmi.UnmarshalException: error unmarshalling return;

Zarko Acimovic zacimovi at cisco.com
Fri Jul 31 05:39:07 PDT 2009


What would you suggest as a workaround?

Should I *copy* the jar files from original Protégé installation directory
to tomcat/webapps/protégé directory to ensure identical versions?

Or should I download the code to Eclipse IDE and then build Protégé and
WebProtege from scratch, ensuring same code base?

Thanks,
Zarko

-----Original Message-----
From: protege-discussion-bounces at lists.stanford.edu
[mailto:protege-discussion-bounces at lists.stanford.edu] On Behalf Of Timothy
Redmond
Sent: Friday, July 31, 2009 2:05 PM
To: User support for Core Protege and the Protege-Frames editor
Cc: protege-discussion at mailman.stanford.edu
Subject: Re: [protege-discussion] Problems when using WebProtege:
java.rmi.UnmarshalException: error unmarshalling return; 


It looks like you are running web protege in the mode where tomcat  
uses a protege client that talks to a protege server.  The errors that  
you are getting mean that the version of protege running on tomcat is  
different than the version of protege running on the protege server.   
These versions must be identical.

-Timothy


On Jul 31, 2009, at 1:33 AM, Zarko Acimovic wrote:

> Hi all,
>
> I have a problem when I want to load Protégé projects through  
> WebProtege.
> I tried both Protégé 3.4 release + 0.5 alpha, build 102  and Protégé  
> 3.4 beta, build 513 + 0.5 alpha, build 101
> I use Apache Tomcat 5.5 on Ubuntu 9, and Tomcate uses Protégé’s Java
> Below is the catalina.out for Protégé 3.4 release + 0.5 alpha, build  
> 102
>
> Thanks,
> Zarko
>
>
> Jul 30, 2009 9:23:13 PM  
> org.apache.catalina.core.AprLifecycleListener lifecycleEvent
> INFO: The Apache Tomcat Native library which allows optimal  
> performance in production environments was not found on the  
> java.library.path: /home/zareac/Protege_3.4.1/jre/lib/i386/client:/ 
> home/zareac/Protege_3.4.1/jre/lib/i386:/home/zareac/Protege_3.4.1/ 
> jre/../lib/i386
> Jul 30, 2009 9:23:13 PM org.apache.coyote.http11.Http11BaseProtocol  
> init
> INFO: Initializing Coyote HTTP/1.1 on http-8080
> Jul 30, 2009 9:23:13 PM org.apache.catalina.startup.Catalina load
> INFO: Initialization processed in 927 ms
> Jul 30, 2009 9:23:13 PM org.apache.catalina.core.StandardService start
> INFO: Starting service Catalina
> Jul 30, 2009 9:23:13 PM org.apache.catalina.core.StandardEngine start
> INFO: Starting Servlet Engine: Apache Tomcat/5.5.27
> Jul 30, 2009 9:23:13 PM org.apache.catalina.core.StandardHost start
> INFO: XML validation disabled
> Jul 30, 2009 9:23:14 PM org.apache.coyote.http11.Http11BaseProtocol  
> start
> INFO: Starting Coyote HTTP/1.1 on http-8080
> Jul 30, 2009 9:23:15 PM org.apache.jk.common.ChannelSocket init
> INFO: JK: ajp13 listening on /0.0.0.0:8009
> Jul 30, 2009 9:23:15 PM org.apache.jk.server.JkMain start
> INFO: Jk running ID=0 time=0/38  config=null
> Jul 30, 2009 9:23:15 PM org.apache.catalina.storeconfig.StoreLoader  
> load
> INFO: Find registry server-registry.xml at classpath resource
> Jul 30, 2009 9:23:15 PM org.apache.catalina.startup.Catalina start
> INFO: Server startup in 2164 ms
> Jul 30, 2009 9:23:24 PM
edu.stanford.bmir.protege.web.server.AdminServiceImpl 
>  init
> INFO: In AdminServiceImpl -- init
> Jul 30, 2009 9:23:24 PM  
> edu.stanford.smi.protege.plugin.PluginUtilities findPluginsDirectory
> WARNING: Plugins directory not found: /home/zareac/apache- 
> tomcat-5.5.27/bin/plugins
> Jul 30, 2009 9:23:26 PM  
> edu.stanford.smi.protege.plugin.PluginUtilities isLoadableClass
> WARNING: java.lang.NoClassDefFoundError: com/nwoods/jgo/ 
> JGoViewListener
> Jul 30, 2009 9:23:26 PM  
> edu.stanford.smi.protege.resource.BundleHelper <init>
> WARNING: missing bundle: standard_extensions_text
> Jul 30, 2009 9:23:26 PM  
> edu.stanford.smi.protege.resource.BundleHelper internalGetText
> WARNING: no resource bundle: tab.queries
> Jul 30, 2009 9:23:26 PM
edu.stanford.bmir.protege.web.server.MetaProjectManagergetMetaprojectURI
> INFO: Path to Metaproject: /home/zareac/apache-tomcat-5.5.27/webapps/ 
> webprotege/projects/metaproject/metaproject.pprj
> Jul 30, 2009 9:23:28 PM
edu.stanford.bmir.protege.web.server.MetaProjectManagergetLocalProjectsData
> INFO: Found project def in metaproject: Collaborative Newspaper at:  
> examples/collaborativeNewspaper/collaborativeNewspaper.pprj
> Jul 30, 2009 9:23:28 PM
edu.stanford.bmir.protege.web.server.MetaProjectManagergetLocalProjectsData
> INFO: Found project def in metaproject: Newspaper at: examples/ 
> newspaper/newspaper.pprj
> Jul 30, 2009 9:23:28 PM
edu.stanford.bmir.protege.web.server.MetaProjectManagergetLocalProjectsData
> INFO: Found project def in metaproject: Wines at: examples/wines/ 
> wines.pprj
> Jul 30, 2009 9:23:28 PM
edu.stanford.bmir.protege.web.server.MetaProjectManagergetLocalProjectsData
> INFO: Found project def in metaproject: Pizza at: examples/pizza/ 
> pizza.owl.pprj
> Jul 30, 2009 9:23:28 PM
edu.stanford.bmir.protege.web.server.MetaProjectManagergetLocalProjectsData
> INFO: Found project def in metaproject: Collaborative Pizza at:  
> examples/collaborativePizza/collaborativePizza.owl.pprj
> Jul 30, 2009 9:23:31 PM
edu.stanford.bmir.protege.web.server.OntologyServiceImpl 
>  init
> INFO: In init of OntologyServiceImp
> Jul 30, 2009 9:23:31 PM
edu.stanford.bmir.protege.web.server.MetaProjectManagergetMetaprojectURI
> INFO: Path to Metaproject: /home/zareac/apache-tomcat-5.5.27/webapps/ 
> webprotege/projects/metaproject/metaproject.pprj
> Jul 30, 2009 9:23:31 PM
edu.stanford.bmir.protege.web.server.ProjectManageropenProjectRemote
> INFO: Loading project Collaborative Newspaper from Protege server  
> localhost
> Jul 30, 2009 9:23:33 PM  
> edu.stanford.smi.protege.server.RemoteProjectManager getProject
> SEVERE: java.lang.RuntimeException: java.rmi.UnmarshalException:  
> error unmarshalling return; nested exception is:
>       java.io.InvalidClassException:  
> edu.stanford.smi.protege.server.update.ValueUpdate; local class  
> incompatible: stream classdesc serialVersionUID =  
> -7753881900765528485, local class serialVersionUID =  
> -4059275656078639103
>       at  
> edu 
> .stanford 
> .smi 
> .protege 
> .server.framestore.RemoteClientFrameStore.convertException(Unknown  
> Source)
>       at  
> edu 
> .stanford 
> .smi 
> .protege.server.framestore.RemoteClientFrameStore.getFrame(Unknown  
> Source)
>       at  
> edu 
> .stanford 
> .smi 
> .protege.model.framestore.ModificationFrameStore.getFrame(Unknown  
> Source)
>       at  
> edu 
> .stanford 
> .smi 
> .protege 
> .model.framestore.ArgumentCheckingFrameStore.getFrame(Unknown Source)
>       at  
> edu 
> .stanford 
> .smi 
> .protege.model.framestore.ModificationFrameStore.getFrame(Unknown  
> Source)
>       at  
> edu 
> .stanford 
> .smi.protege.model.framestore.FrameStoreAdapter.getFrame(Unknown  
> Source)
>       at  
> edu 
> .stanford 
> .smi.protege.model.framestore.FrameStoreAdapter.getFrame(Unknown  
> Source)
>       at  
> edu 
> .stanford 
> .smi.protege.model.framestore.FrameStoreAdapter.getFrame(Unknown  
> Source)
>       at  
> edu.stanford.smi.protege.model.DefaultKnowledgeBase.getFrame(Unknown  
> Source)
>       at  
> edu 
> .stanford 
> .smi.protege.model.DefaultKnowledgeBase.getFrameOfType(Unknown Source)
>       at  
> edu.stanford.smi.protege.model.DefaultKnowledgeBase.getCls(Unknown  
> Source)
>       at  
> edu.stanford.smi.protege.model.Project.getProjectInstance(Unknown  
> Source)
>       at  
> edu.stanford.smi.protege.server.RemoteClientProject.copyKb(Unknown  
> Source)
>       at  
> edu.stanford.smi.protege.server.RemoteClientProject.<init>(Unknown  
> Source)
>       at  
> edu 
> .stanford 
> .smi.protege.server.RemoteClientProject.createProject(Unknown Source)
>       at  
> edu 
> .stanford.smi.protege.server.RemoteProjectManager.getProject(Unknown  
> Source)
>       at
edu.stanford.bmir.protege.web.server.ProjectManager.openProjectRemote 
> (Unknown Source)
>       at
edu.stanford.bmir.protege.web.server.ProjectManager.ensureProjectOpen 
> (Unknown Source)
>       at
edu.stanford.bmir.protege.web.server.ProjectManager.getServerProject 
> (Unknown Source)
>       at
edu.stanford.bmir.protege.web.server.OntologyServiceImpl.loadProject 
> (Unknown Source)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>       at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown  
> Source)
>       at java.lang.reflect.Method.invoke(Unknown Source)
>       at  
> com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java: 
> 527)
>       at  
> com 
> .google 
> .gwt 
> .user 
> .server 
> .rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:164)
>       at  
> com 
> .google 
> .gwt 
> .user 
> .server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:86)
>       at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
>       at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
>       at  
> org 
> .apache 
> .catalina 
> .core 
> .ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java: 
> 269)
>       at  
> org 
> .apache 
> .catalina 
> .core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
>       at  
> org 
> .apache 
> .catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java: 
> 213)
>       at  
> org 
> .apache 
> .catalina.core.StandardContextValve.invoke(StandardContextValve.java: 
> 172)
>       at  
> org 
> .apache 
> .catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
>       at  
> org 
> .apache 
> .catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
>       at  
> org 
> .apache 
> .catalina.core.StandardEngineValve.invoke(StandardEngineValve.java: 
> 108)
>       at  
> org 
> .apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java: 
> 174)
>       at  
> org 
> .apache.coyote.http11.Http11Processor.process(Http11Processor.java: 
> 875)
>       at org.apache.coyote.http11.Http11BaseProtocol 
> $Http11ConnectionHandler.processConnection(Http11BaseProtocol.java: 
> 665)
>       at  
> org 
> .apache 
> .tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java: 
> 528)
>       at  
> org 
> .apache 
> .tomcat 
> .util 
> .net 
> .LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
>       at org.apache.tomcat.util.threads.ThreadPool 
> $ControlRunnable.run(ThreadPool.java:689)
>       at java.lang.Thread.run(Unknown Source)
> Caused by: java.rmi.UnmarshalException: error unmarshalling return;  
> nested exception is:
>       java.io.InvalidClassException:  
> edu.stanford.smi.protege.server.update.ValueUpdate; local class  
> incompatible: stream classdesc serialVersionUID =  
> -7753881900765528485, local class serialVersionUID =  
> -4059275656078639103
>       at sun.rmi.server.UnicastRef.invoke(Unknown Source)
>       at  
> edu 
> .stanford 
> .smi 
> .protege.server.framestore.ServerFrameStore_Stub.getFrame(Unknown  
> Source)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>       at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown  
> Source)
>       at java.lang.reflect.Method.invoke(Unknown Source)
>       at  
> edu.stanford.smi.protege.server.framestore.RemoteClientFrameStore 
> $2.invoke(Unknown Source)
>       at $Proxy1.getFrame(Unknown Source)
>       at  
> edu 
> .stanford 
> .smi 
> .protege.server.framestore.RemoteClientFrameStore.getFrame(Unknown  
> Source)
>       ... 41 more
> Caused by: java.io.InvalidClassException:  
> edu.stanford.smi.protege.server.update.ValueUpdate; local class  
> incompatible: stream classdesc serialVersionUID =  
> -7753881900765528485, local class serialVersionUID =  
> -4059275656078639103
>       at java.io.ObjectStreamClass.initNonProxy(Unknown Source)
>       at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
>       at java.io.ObjectInputStream.readClassDesc(Unknown Source)
>       at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
>       at java.io.ObjectInputStream.readObject0(Unknown Source)
>       at java.io.ObjectInputStream.readObject(Unknown Source)
>       at java.util.ArrayList.readObject(Unknown Source)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>       at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown  
> Source)
>       at java.lang.reflect.Method.invoke(Unknown Source)
>       at java.io.ObjectStreamClass.invokeReadObject(Unknown Source)
>       at java.io.ObjectInputStream.readSerialData(Unknown Source)
>       at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
>       at java.io.ObjectInputStream.readObject0(Unknown Source)
>       at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
>       at java.io.ObjectInputStream.readSerialData(Unknown Source)
>       at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
>       at java.io.ObjectInputStream.readObject0(Unknown Source)
>       at java.io.ObjectInputStream.readObject(Unknown Source)
>       at sun.rmi.server.UnicastRef.unmarshalValue(Unknown Source)
>       ... 50 more
>
> Jul 30, 2009 9:29:26 PM
edu.stanford.bmir.protege.web.server.MetaProjectManagergetLocalProjectsData
> INFO: Found project def in metaproject: Collaborative Newspaper at:  
> examples/collaborativeNewspaper/collaborativeNewspaper.pprj
> Jul 30, 2009 9:29:26 PM
edu.stanford.bmir.protege.web.server.MetaProjectManagergetLocalProjectsData
> INFO: Found project def in metaproject: Newspaper at: examples/ 
> newspaper/newspaper.pprj
> Jul 30, 2009 9:29:26 PM
edu.stanford.bmir.protege.web.server.MetaProjectManagergetLocalProjectsData
> INFO: Found project def in metaproject: Wines at: examples/wines/ 
> wines.pprj
> Jul 30, 2009 9:29:26 PM
edu.stanford.bmir.protege.web.server.MetaProjectManagergetLocalProjectsData
> INFO: Found project def in metaproject: Pizza at: examples/pizza/ 
> pizza.owl.pprj
> Jul 30, 2009 9:29:26 PM
edu.stanford.bmir.protege.web.server.MetaProjectManagergetLocalProjectsData
> INFO: Found project def in metaproject: Collaborative Pizza at:  
> examples/collaborativePizza/collaborativePizza.owl.pprj
> Jul 30, 2009 9:29:29 PM
edu.stanford.bmir.protege.web.server.ProjectManageropenProjectRemote
> INFO: Loading project Collaborative Pizza from Protege server  
> localhost
> Jul 30, 2009 9:29:30 PM  
> edu.stanford.smi.protegex.owl.repository.impl.LocalFolderRepository  
> update
> WARNING: [Local Folder Repository] The specified file must be a  
> directory. (/home/zareac/apache-tomcat-5.5.27/bin/plugins/ 
> edu.stanford.smi.protegex.owl)
> Jul 30, 2009 9:29:31 PM  
> edu.stanford.smi.protege.server.RemoteProjectManager getProject
> SEVERE: java.lang.RuntimeException: java.rmi.UnmarshalException:  
> error unmarshalling return; nested exception is:
>       java.io.InvalidClassException:  
> edu.stanford.smi.protege.server.update.ValueUpdate; local class  
> incompatible: stream classdesc serialVersionUID =  
> -7753881900765528485, local class serialVersionUID =  
> -4059275656078639103
>       at  
> edu 
> .stanford 
> .smi 
> .protege 
> .server.framestore.RemoteClientFrameStore.convertException(Unknown  
> Source)
>       at  
> edu 
> .stanford 
> .smi 
> .protege.server.framestore.RemoteClientFrameStore.getFrame(Unknown  
> Source)
>       at  
> edu 
> .stanford 
> .smi 
> .protege.model.framestore.ModificationFrameStore.getFrame(Unknown  
> Source)
>       at  
> edu 
> .stanford 
> .smi 
> .protege 
> .model.framestore.ArgumentCheckingFrameStore.getFrame(Unknown Source)
>       at  
> edu 
> .stanford 
> .smi 
> .protege.model.framestore.ModificationFrameStore.getFrame(Unknown  
> Source)
>       at  
> edu 
> .stanford 
> .smi.protege.model.framestore.FrameStoreAdapter.getFrame(Unknown  
> Source)
>       at  
> edu 
> .stanford 
> .smi.protege.model.framestore.FrameStoreAdapter.getFrame(Unknown  
> Source)
>       at  
> edu 
> .stanford 
> .smi.protege.model.framestore.FrameStoreAdapter.getFrame(Unknown  
> Source)
>       at  
> edu.stanford.smi.protege.model.DefaultKnowledgeBase.getFrame(Unknown  
> Source)
>       at  
> edu 
> .stanford 
> .smi.protege.model.DefaultKnowledgeBase.getFrameOfType(Unknown Source)
>       at  
> edu.stanford.smi.protege.model.DefaultKnowledgeBase.getCls(Unknown  
> Source)
>       at  
> edu.stanford.smi.protege.model.Project.getProjectInstance(Unknown  
> Source)
>       at  
> edu.stanford.smi.protege.server.RemoteClientProject.copyKb(Unknown  
> Source)
>       at  
> edu.stanford.smi.protege.server.RemoteClientProject.<init>(Unknown  
> Source)
>       at  
> edu 
> .stanford 
> .smi.protege.server.RemoteClientProject.createProject(Unknown Source)
>       at  
> edu 
> .stanford.smi.protege.server.RemoteProjectManager.getProject(Unknown  
> Source)
>       at
edu.stanford.bmir.protege.web.server.ProjectManager.openProjectRemote 
> (Unknown Source)
>       at
edu.stanford.bmir.protege.web.server.ProjectManager.ensureProjectOpen 
> (Unknown Source)
>       at
edu.stanford.bmir.protege.web.server.ProjectManager.getServerProject 
> (Unknown Source)
>       at
edu.stanford.bmir.protege.web.server.OntologyServiceImpl.loadProject 
> (Unknown Source)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>       at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown  
> Source)
>       at java.lang.reflect.Method.invoke(Unknown Source)
>       at  
> com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java: 
> 527)
>       at  
> com 
> .google 
> .gwt 
> .user 
> .server 
> .rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:164)
>       at  
> com 
> .google 
> .gwt 
> .user 
> .server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:86)
>       at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
>       at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
>       at  
> org 
> .apache 
> .catalina 
> .core 
> .ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java: 
> 269)
>       at  
> org 
> .apache 
> .catalina 
> .core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
>       at  
> org 
> .apache 
> .catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java: 
> 213)
>       at  
> org 
> .apache 
> .catalina.core.StandardContextValve.invoke(StandardContextValve.java: 
> 172)
>       at  
> org 
> .apache 
> .catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
>       at  
> org 
> .apache 
> .catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
>       at  
> org 
> .apache 
> .catalina.core.StandardEngineValve.invoke(StandardEngineValve.java: 
> 108)
>       at  
> org 
> .apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java: 
> 174)
>       at  
> org 
> .apache.coyote.http11.Http11Processor.process(Http11Processor.java: 
> 875)
>       at org.apache.coyote.http11.Http11BaseProtocol 
> $Http11ConnectionHandler.processConnection(Http11BaseProtocol.java: 
> 665)
>       at  
> org 
> .apache 
> .tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java: 
> 528)
>       at  
> org 
> .apache 
> .tomcat 
> .util 
> .net 
> .LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
>       at org.apache.tomcat.util.threads.ThreadPool 
> $ControlRunnable.run(ThreadPool.java:689)
>       at java.lang.Thread.run(Unknown Source)
> Caused by: java.rmi.UnmarshalException: error unmarshalling return;  
> nested exception is:
>       java.io.InvalidClassException:  
> edu.stanford.smi.protege.server.update.ValueUpdate; local class  
> incompatible: stream classdesc serialVersionUID =  
> -7753881900765528485, local class serialVersionUID =  
> -4059275656078639103
>       at sun.rmi.server.UnicastRef.invoke(Unknown Source)
>       at  
> edu 
> .stanford 
> .smi 
> .protege.server.framestore.ServerFrameStore_Stub.getFrame(Unknown  
> Source)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>       at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown  
> Source)
>       at java.lang.reflect.Method.invoke(Unknown Source)
>       at  
> edu.stanford.smi.protege.server.framestore.RemoteClientFrameStore 
> $2.invoke(Unknown Source)
>       at $Proxy1.getFrame(Unknown Source)
>       at  
> edu 
> .stanford 
> .smi 
> .protege.server.framestore.RemoteClientFrameStore.getFrame(Unknown  
> Source)
>       ... 41 more
> Caused by: java.io.InvalidClassException:  
> edu.stanford.smi.protege.server.update.ValueUpdate; local class  
> incompatible: stream classdesc serialVersionUID =  
> -7753881900765528485, local class serialVersionUID =  
> -4059275656078639103
>       at java.io.ObjectStreamClass.initNonProxy(Unknown Source)
>       at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
>       at java.io.ObjectInputStream.readClassDesc(Unknown Source)
>       at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
>       at java.io.ObjectInputStream.readObject0(Unknown Source)
>       at java.io.ObjectInputStream.readObject(Unknown Source)
>       at java.util.ArrayList.readObject(Unknown Source)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>       at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown  
> Source)
>       at java.lang.reflect.Method.invoke(Unknown Source)
>       at java.io.ObjectStreamClass.invokeReadObject(Unknown Source)
>       at java.io.ObjectInputStream.readSerialData(Unknown Source)
>       at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
>       at java.io.ObjectInputStream.readObject0(Unknown Source)
>       at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
>       at java.io.ObjectInputStream.readSerialData(Unknown Source)
>       at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
>       at java.io.ObjectInputStream.readObject0(Unknown Source)
>       at java.io.ObjectInputStream.readObject(Unknown Source)
>       at sun.rmi.server.UnicastRef.unmarshalValue(Unknown Source)
>       ... 50 more
>
>
>
> _______________________________________________
> protege-discussion mailing list
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