Exporting to Sketchup Crashes Microstation V8i

Hello,

I'm trying to export a file to SketchUp in order to do some additional modeling.  It is a water channel realignment and has countours and i get to around 37% and microstation just closes spontaneously.  Has anyone experienced any similar issues and if so any fixes?  Any limits on what can be exported to SU?  The drawing has about 8 reference files that link to different aspects of the alignment.

Thanks