Hasta La Motion!

i´ve got a finedetailed fbx-geo in my 3d-scene. everything is ok as long as watching/modifying it in the 3d-viewer. but in the moment i view the scanlinerenderer and switch the viewer to 2d, nuke closes immediately!!
it does not happen with other geos in the comp(a little less complex ones). but i think my machine shoulf be strong enough for that.

i tried to modify several viewer setting, readgeo-node settings or scanlinerenderer settings, as well as rebuilding a new comp from scratch with only this geo. all the same 🙁

any ideas?

thanks!!!!

btw, i´m running Nuke 6.1v3,
my machine is quadcore q9000,
8 gigs Ram,
nvidia quadro fx 2700 mobile