I've had that problem before, (also with plenty of disk space)..
I found that importing all the stuff into a new scene has worked for me, give it a go.
cheers,
Chris
EDIT: Could alo try moving the -percentage value down to something like 50 while your trying to error check as I have had errors with that before.
Last edited by bendingiscool; 28-12-2009 at 10:32 AM.