zipruby isn't working on Ruby 1.9.2

Rakefile

@@ -9,7 +9,7 @@ begin
     gemspec.authors = ["Alex MacCaw"]
     gemspec.add_dependency('templater',      '>= 0.3.2')
     gemspec.add_dependency('activesupport',  '>= 3.0.0.beta')
-    gemspec.add_dependency('zipruby')
+    gemspec.add_dependency('rubyzip2',       '>= 2.0.1')
     gemspec.add_dependency('supermodel',     '>= 0.1.3')
     gemspec.add_dependency('bowline-bundler','>= 0.0.1')
 

bowline.gemspec

@@ -9,7 +9,7 @@ Gem::Specification.new do |s|
 
   s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version=
   s.authors = ["Alex MacCaw"]
-  s.date = %q{2010-06-23}
+  s.date = %q{2010-06-24}
   s.default_executable = %q{bowline-gen}
   s.description = %q{Ruby/JS GUI framework}
   s.email = %q{alex@leadthinking.com}
@@ -145,20 +145,20 @@ Gem::Specification.new do |s|
     if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
       s.add_runtime_dependency(%q<templater>, [">= 0.3.2"])
       s.add_runtime_dependency(%q<activesupport>, [">= 3.0.0.beta"])
-      s.add_runtime_dependency(%q<zipruby>, [">= 0"])
+      s.add_runtime_dependency(%q<rubyzip2>, [">= 2.0.1"])
       s.add_runtime_dependency(%q<supermodel>, [">= 0.1.3"])
       s.add_runtime_dependency(%q<bowline-bundler>, [">= 0.0.1"])
     else
       s.add_dependency(%q<templater>, [">= 0.3.2"])
       s.add_dependency(%q<activesupport>, [">= 3.0.0.beta"])
-      s.add_dependency(%q<zipruby>, [">= 0"])
+      s.add_dependency(%q<rubyzip2>, [">= 2.0.1"])
       s.add_dependency(%q<supermodel>, [">= 0.1.3"])
       s.add_dependency(%q<bowline-bundler>, [">= 0.0.1"])
     end
   else
     s.add_dependency(%q<templater>, [">= 0.3.2"])
     s.add_dependency(%q<activesupport>, [">= 3.0.0.beta"])
-    s.add_dependency(%q<zipruby>, [">= 0"])
+    s.add_dependency(%q<rubyzip2>, [">= 2.0.1"])
     s.add_dependency(%q<supermodel>, [">= 0.1.3"])
     s.add_dependency(%q<bowline-bundler>, [">= 0.0.1"])
   end

lib/bowline/tasks/app.rake

@@ -2,7 +2,7 @@ require 'fileutils'
 require 'erb'
 require 'rbconfig'
 require 'tempfile'
-require 'zipruby'
+require 'zip/zip'
 
 namespace :app do  
   namespace :build do
@@ -26,13 +26,15 @@ namespace :app do
       dirs.delete_if {|d| d.include?(Bowline.root.join(*%w{db migrate}).to_s) }      
       dirs.delete_if {|i| i =~ /\.svn|\.DS_Store|\.git/ }
 
-      Zip::Archive.open(app_path, Zip::CREATE) do |zf|
-        zf.add_buffer("app_first_run",  "")
-        zf.add_buffer("app_production", "")
+      Zip::ZipFile.open(app_path, Zip::ZipFile::CREATE) do |zf|
+        # This is horrible - but RubyZIP's API sucks
+        blank = Tempfile.new("blank")
+        zf.add("app_first_run", blank.path)
+        zf.add("app_production", blank.path)
 
         dirs.each do |dir|
           name = dir.sub(Bowline.root.to_s + "/", "")
-          zf.add_file(dir, name)
+          zf.add(name, dir)
         end
       end
     end