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[protege-discussion] WebProtege load failure

Lexing Xie xlx at
Wed Jan 7 17:10:36 PST 2009

Syncing the metaproject and restarting both the protege server and 
servelet container solved of the problem
Thank you very much !

Another question (somewhat far-fetched ):
has anyone worked on ontologies involving image/video instances, and in 
particular displaying non-textual data within Protege?
I'd imagine it being doable by developing a media display plugin, just 
wanted to check if anyone has already tred down the path.


Jennifer Vendetti wrote:
> Lexing Xie wrote:
>> Error symptom:
>> WebProtege ontology list displays fine at an url looking like 
>>       .. logging in seemed to work but there was no username displayed 
>> on the overview page.
>> *but *individual ontology files refused to open, with an error box 
>> saying "load project Collaborative Pizza failed. message: the call 
>> failed on the server, see server log for details"
>> enclosed  below are (1) server log message about "Exception while 
>> dispatching incoming RPC call"; (2) screenshot of the error box.
>> I tried changing the project location to absolute paths in either or 
>> both copies of metaproject but did not help.
> Please note that the metaproject must be identical in both places for 
> the WebProtege application to work properly.  If you make any changes to 
> the metaproject, you must restart the servlet container.
>> System setup:
>> - downloaded and installed copies of stand-alone full Protege (build 
>> 513) + webprotege.war (built Nov 26 16:00, w. Tomcat 5.5)
>> - edited the metaproject, etc according to the 
>> Protege Client-Server and the WebProtegeAdmin guides.
>> Q1: could you see why there is an error?
>> Q2: which copy of metaproject is read (in examples/server or  in 
>> Tomcat5.5/webapps/webprotege/projects/) ... should they be always kept 
>> identical? where is relative path example/* resolved ...
> Both copies of the metaproject are read and must be kept identical.  The 
> location of your projects must be either a) absolute in both copies - or 
> - b) if they are relative paths, the paths should be relative to where 
> the Protege server is executing from (not WebProtege).
> Please verify that both copies of the metaproject are identical and that 
> both copies list the location of your projects as absolute, or relative 
> to the Protege server installation.  Once you have done this, please 
> restart your servlet container.
> This information is listed in the admin's guide in the following two 
> sections:
> ... which you may find helpful for reference.
> Jennifer
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