took a while to rerun - every run takes nearly an hour to fail:
I confirm that I had well over 3GB free
the process maxed out at 1867640 KB (1.78GB).
My Machine had pleanty of available RAM, I expect the process is contrained by a 32bit limit, or 32 bit Python might have hit a limit.
Any ideas on how to work around this issue? Any tweaks I can try in the product?