Since the beginning Serpico has used ZipRuby for the Zip library. It’s done a sufficient job but it is a mess to install on Windows. Gathering up our technical debt we switched the code to RubyZip along with refactoring the document process. Really RubyZip is a far better option as it’s modern, supported, and installs on Windows.
Serpico runs on Windows now. An installer is soon to follow. =)