Hi! There is a missing entry point for the mkzeoinst.py script in ZODB3-3.5.1: if __name__=="__main__": main() Regards, Tamas -- Tamas Hegedus, PhD | phone: (1) 919-966 0329 UNC - Biochem & Biophys | fax: (1) 919-966 5178 5007A Thurston-Bowles Bldg | mailto:hegedus at med.unc.edu Chapel Hill, NC, 27599-7248 | http://biohegedus.org