Thanks William and John, So the full path that scipy is using is: /private/var/folders/w4/wrnzszgd41d7064lx64nc10h0000gn/T/<tmpfilename.png>
I can't recall specifically adding the /var directory under /private. William - do you know how I can make scipy write temporary files in a non SIP folder? Thanks so much, Darren -- https://mail.python.org/mailman/listinfo/python-list