I was able to import fully clothed V4 AND a dragon into 6 Inf a little while ago.  I think it was 4.1 though, not the original. 
Could it be that the skin tex you used has a ridiculously high resolution and that's what's crashing Vue?  I've had that problem in teh past.
Just to experiment, try saving a non textured V4 and import it see if it crashes or not ?

Gill