Big issues with my .kmz exports

[discotroll]

Hi all -

I've finally put something together that I'd like to upload to the Warehouse but I've suddenly hit a brick wall when I try to export my model to a .kmz file.

Firstly if I export the whole model my Sketchup will just 'hang' when I try importing it back in (it isn't a massive file compared with some I've previously downloaded from the warehouse) and secondly, if I export parts to see if they export/import okay, they loose all of their 'smoothed' edges when I import the kmz file (i.e. every single line is solid).

Does anyone have any clues as to what I may be doing wrong?

Thanks,

DT.