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[protege-discussion] problems with Jena 2

Tania Tudorache tudorache at stanford.edu
Tue Apr 22 12:09:07 PDT 2008


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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