Hi Patrik

thanks for answering!
Yes, that's probably the direction to dig for. I deliberately used 3.5 (and
didn't remember your tuto says use 3.4). I used a fresh modelling distro and
I see that Xext (TMF) packages and Xpand/Xtend bundles are installed. This
is most likely the reason. I have to admit that I have no idea how to fix
it. An advice from Sven Eftringe (Xtext) I came across was to use the itemis
packages without any further hints. So I'll probably have to get back to
3.4, I guess.
Any further thoughts?

Thanks + Cheers
André


Patrik Nordwall wrote:
> 
> What version of Eclipse are you using? We have only tested with 3.4
> Ganymede.
> 
> When googling on com.sun.java.xml.ns.persistence.orm.OrmPackage I found
> some issues with M2T/TMF and this class? M2T and TMF is the next version
> of openArchitectureWare, which we are not using yet. Have you installed
> that (or is it included in the eclipse package you are using)? Maybe there
> is some interference between that and openArchitectureWare 4.3.1
> 
> /Patrik
> 
> 
> André Dietisheim wrote:
>> 
>> Hi!
>> 
>> I just started the HelloWorld Tutorial and got stuck in the Xtext Editor.
>> It displays the following error:
>> 
>> Error during linking phase : java.lang.ClassNotFoundException:
>> com.sun.java.xml.ns.persistence.orm.OrmPackage
>> 
>> I guess some plugin required by Xtext are not installed. I used the
>> openarchitecture ware update site and installed v4.3.1. This worked
>> without any flaws.
>> Any hints what I need to to to fix that?
>> 
>> Thanks in advance
>> André
>> 
> 
> 

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