Couple thoughts. You could try deleting/hiding parts of your model until it's able to export. That could give you a better idea of where the problem area is that's causing the crash. If you think it's a memory issue (and it sounds like it may be), then the question is how can you optimize. 120 mb is a very large SU file. Where is all that memory coming from. Typically it's going to either be geometry or textures. Unless you have loads of 3d modeled grass in that large lawn of yours, it's almost definitely coming from textures. You've probably got a number of high resolution textures applied within your SU model. SU saves the texture within the .skp rather than just referencing it like most programs would. So if you have a 10kb model of a box and apply a 20mb texture to it and save you'll end up with a 20mb .skp file. I'm not sure how Vray for Su works in this regard but you may need to optimize your textures somehow. With Maxwell render I can save a super low resolution file with a lot of compression and use that in my SU model, then tell Maxwell that this LowRes image relates to a maxwell material which contains high res textures - at export time, it replaces my low res image with the high res texture for rendering purposes. If that's not an option in Vray, you may still need to use some lower resolution textures and maybe save them as .jpg's with some compression to them to get the file sizes down. -Brodie