"xforms:item must contain an xforms:label element" error although it contains it

>
> http://www.nabble.com/file/p15019882/xforms-error.zip xforms-error.zip
>
> If I reference non-existing element with select1 whole page gives me  
> this
> "xforms:item must contain an xforms:label element" error. Attached zip
> contains minimal test-case for this problem.
>
> Select1 does contain labels=
>
> <xforms:group ref="instance('main')/emptyNode">
>       <xforms:select1 id="testing_select1"
> ref="instance('main')/emptyNode/select">
>           <xforms:label ref="instance('dictionary')/heading"/>
>           <xforms:item>
>              <xforms:label ref="instance('dictionary')/label1"/>
>              <xforms:value>test1</xforms:value>
>           </xforms:item>
>           <xforms:item>
>              <xforms:label ref="instance('dictionary')/label2"/>
>              <xforms:value>test2</xforms:value>
>           </xforms:item>
>        </xforms:select1>
>    </xforms:group>
>
>
> --
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