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[protege-discussion] problems with Jena 2

Jimena linaresj at
Mon Apr 28 11:56:09 PDT 2008

Hi Tania, I´ve already posted the problem on the Protege-OWL mailing list,
however I don´t have answers until now, can you please help me?

Tania Tudorache wrote:
> Please post OWL related questions on the Protege-OWL mailing list.
> Please post also the whole stack trace of the exception that you get in 
> the console.
> Thanks,
> Tania
> Jimena wrote:
>> tHi, I´m actually using Protégé 3.3.1., since the last year I  develop my
>> ontology on protégé version 2.1, I decided to include more information to
>> my
>> ontology related with properties, bibliography and some comments and make
>> this in Protégé 3.4 version beta and later in 3.3.1 (cause 3.4 didn´t
>> work
>> as I wanted).   
>> When I try to make some change or include new information and save my
>> work
>> appear a box thata says:
>> Failed to save file null using Protege 2 Jena. Exception class
>> java.lang.null pointer exception.
>> I thougth that maybe it was because a worked in different versions so I
>> decide to keep version 3.3.1 remove the others version of my computer and
>> work with the original ontology (I deleted all cahanges) but the problem
>> continuos.
>> Someone know about this problem?? This problem began 1 month ago and I
>> relly
>> have to continue working.
>> Thanks a lot
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