Hi Martin, if you're running out of memory during exporting a large project, see these tips here on how to reduce overall memory consumption:
http://moi3d.com/forum/index.php?webtag=MOI&msg=5322.2


If after making a coarser display mesh and turning off multi-threading for the export you're still running out of memory you can then do some selection and partial scene exports at that point, and probably just selecting half of your model and exporting it will lighten the load enough to do the export, then invert the selection and export the rest. Just doing a window select of roughly half the objects is a lot more simple than trying to export each object individually.

- Michael