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[protege-discussion] WebProtege Unable to Open Protege Project

Bhaskar Ghosh bjgindia at
Mon May 11 05:14:24 PDT 2009

Hello Tania/All,

NOTE: In continuation to this thread (

I am facing almost the same problem as Manolis faced (as described in the above thread chain). 
I have created a new Protege Project (OWL/RDF Files) named
proc_ontology.pprj. It is also displayed in the WebProtege that I have
set up on my pc. 
But, when I click it in WebProtege, I get a"Load project Pizza failed. Message: The call failed on the server; see server log for details"error.

The error messages in the server log says, it was unable to open the
project! I have pasted the Tomcat Server Logs at the end of this mail.
I am also answering to the questions you had asked in the thread chain

> 1. What Protege version you are using?

> 2. Did the Protege server start successfully?

>3. Did you create a user "webprotege" with the password "webprotege" in the metaproject? 
>This is how WebProtege connects to the Protege server. >If you didn't, then this is the problem. 
>Add the user "webprotege" to the group "World". 
>Make sure that the group World has read access to the Pizza project. 

>4. Try to connect with a Protege client to the server, using the 
>user/pass: webprotege/webprotege and try to open project Pizza. Did you 
I am unable to log in to the server using webprotege/webprotege. The Protege client throws a 
"Failed to create a session because of either: an invalid username/password combination, or
a firewall problem" error. But, I am sure I am entering webprotege/webprotege and
that this user/pwd combination is added to the metaproject.
It is also the author of the proc_ontology project.

>5. If you succeeded with all previous steps, but still has problems, 
>please send me the metaproject files and the a zip file with 
>catalina.out from the tomcat/logs folder.

-------------------------------TOMCAT SERVER LOGS-------------------------------
May 11, 2009 5:06:46 PM org.apache.catalina.core.ApplicationContext log
SEVERE: Exception while dispatching incoming RPC call Service method
'public abstract java.lang.Integer
threw an unexpected exception: java.lang.RuntimeException: Cannot open
project proc_ontology
    at javax.servlet.http.HttpServlet.service(
    at javax.servlet.http.HttpServlet.service(
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(
    at org.apache.catalina.core.StandardWrapperValve.invoke(
    at org.apache.catalina.core.StandardContextValve.invoke(
    at org.apache.catalina.core.StandardHostValve.invoke(
    at org.apache.catalina.valves.ErrorReportValve.invoke(
    at org.apache.catalina.core.StandardEngineValve.invoke(
    at org.apache.catalina.connector.CoyoteAdapter.service(
    at org.apache.coyote.http11.Http11Processor.process(
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(
Caused by: java.lang.RuntimeException: Cannot open project proc_ontology
    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(
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(
    at java.lang.reflect.Method.invoke(
    ... 16 more

Thanks in advance.


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