Hyperlinks in PowerPoint SmartArt

Question

I'm trying to loop all hyperlinks in PowerPoint presentation in Add In application.

It works fine when the hyperlinks are in normal text but when they are in a Smart Art object I get an exception when trying to get the link.

Here is the code that I'm using:

 // Get slides collection.
 CComPtr< PowerPoint::Slides > spSlides;
 pPresentation->get_Slides( &spSlides );
 long lCount = spSlides->GetCount();

 // Loop through all slides.
 for( long lItem = 1; lItem <= lCount; ++lItem )
 {
     // Get the slide.
     CComPtr< PowerPoint::_Slide > spSlide;
     spSlides->raw_Item( CComVariant( lItem ), &spSlide );

     // Get all hyperlinks from the slide.
     PowerPoint::HyperlinksPtr spHyperlinks;
     spSlide->get_Hyperlinks( &spHyperlinks );

    // Go through the hyperlinks.
    long lLinkCount = 0;
    hyperlinks.get_Count( OUT &lLinkCount );
    for( long lLink = 1; lLink <= lLinkCount; ++lLink )
    {
         // Get the hyperlink at the index.
         CComPtr< PowerPoint::Hyperlink > spHyperlink;
         hyperlinks.raw_Item( lLink, &spHyperlink );

The last line throws an exception '0x000000e7 : All pipe instances are busy.' when the hyperlink is in Smart Art object.
Do I have to get those Smart Art link somehow differently?

Thanks,
Timo Koukkari