Generally I can get you a steam key, just email me from the email address that you bought Zombasite with. You can find my email address at http://www.soldak.com/Company/Contact.html
That's strange. It shouldn't be doing that. It sounds like it can't write out the used.cfg file correctly for some reason.
Depths of Peril, Kivi's Underworld, Din's Curse, Drox Operative, Zombasite, Din's Legacy, & Drox Operative 2