rubymotion error when using motion-cocoapods

error.log

bundle exec rake retina=true                                
Could not find rake-10.0.4 in any of the sources
Run `bundle install` to install missing gems.
     Build ./build/iPhoneSimulator-6.1-Development
     Build vendor/Pods
   Compile ./app/md_edit_view_controller.rb
      Link ./build/iPhoneSimulator-6.1-Development/markdownbox.app/markdownbox
    Create ./build/iPhoneSimulator-6.1-Development/markdownbox.app/Info.plist
    Create ./build/iPhoneSimulator-6.1-Development/markdownbox.app/PkgInfo
    Create ./build/iPhoneSimulator-6.1-Development/markdownbox.dSYM
  Simulate ./build/iPhoneSimulator-6.1-Development/markdownbox.app
(main)> 2013-04-24 20:51:37.322 markdownbox[80447:c07] md_edit_view_controller.rb:15:in `block in viewDidLoad': uninitialized constant MDEditViewController::MMMarkdown (NameError)
  from md_edit_view_controller.rb:9:in `viewDidLoad'
	from app_delegate.rb:8:in `application:didFinishLaunchingWithOptions:'
2013-04-24 20:51:37.335 markdownbox[80447:c07] *** Terminating app due to uncaught exception 'NameError', reason: 'md_edit_view_controller.rb:15:in `block in viewDidLoad': uninitialized constant MDEditViewController::MMMarkdown (NameError)
	from md_edit_view_controller.rb:9:in `viewDidLoad'
	from app_delegate.rb:8:in `application:didFinishLaunchingWithOptions:'
'
*** First throw call stack:
(0x1bbe012 0x394e7e 0x1b6084 0x2c02 0x2615 0x1)
libc++abi.dylib: terminate called throwing an exception

Gemfile

source "https://rubygems.org"

gem "bubble-wrap", :require => "bubble-wrap/all"
gem "motion-testflight"

#gem "cocoapods", "0.16.4"
#gem "cocoapods", "0.17.1"
gem "cocoapods"

#gem "motion-cocoapods"
#gem "motion-cocoapods", "1.2.2"
gem "motion-cocoapods", "1.3.0.rc1"

Rakefile

# -*- coding: utf-8 -*-
$:.unshift("/Library/RubyMotion/lib")
require 'motion/project'
require 'bundler/setup'

Bundler.require


Motion::Project::App.setup do |app|
  # Use `rake config' to see complete project settings.
  app.name = 'markdownbox'

  #app.frameworks << "MMMarkdown"
  app.pods do
    #pod 'Bypass'
    #pod 'STLOAuth'
    pod "MMMarkdown"
  end

end

result_rake_command.sh

➜  tree vendor/Pods
vendor/Pods
├── BuildHeaders
│   └── MMMarkdown
│       └── MMMarkdown.h -> ../../MMMarkdown/include/MMMarkdown.h
├── Documentation
│   └── MMMarkdown
├── Headers
│   └── MMMarkdown
│       └── MMMarkdown.h -> ../../MMMarkdown/include/MMMarkdown.h
├── MMMarkdown
│   ├── README.md
│   ├── include
│   │   └── MMMarkdown.h
│   └── lib
│       └── libMMMarkdown-iOS.a
├── Pods-Acknowledgements.markdown
├── Pods-Acknowledgements.plist
├── Pods-prefix.pch
├── Pods-resources.sh
├── Pods.bridgesupport
├── Pods.xcconfig
├── Pods.xcodeproj
│   ├── project.pbxproj
│   ├── project.xcworkspace
│   │   ├── contents.xcworkspacedata
│   │   └── xcuserdata
│   │       └── takeo_yamaji.xcuserdatad
│   │           └── UserInterfaceState.xcuserstate
│   └── xcuserdata
│       └── takeo_yamaji.xcuserdatad
│           └── xcschemes
│               ├── Pods.xcscheme
│               └── xcschememanagement.plist
├── PodsDummy_Pods.m
├── Resources
├── build
│   └── Pods.build
│       └── Release-iphonesimulator
│           └── Pods.build
│               ├── Objects-normal
│               │   └── i386
│               │       ├── Pods.LinkFileList
│               │       ├── PodsDummy_Pods.d
│               │       ├── PodsDummy_Pods.dia
│               │       └── PodsDummy_Pods.o
│               ├── Pods-all-target-headers.hmap
│               ├── Pods-generated-files.hmap
│               ├── Pods-own-target-headers.hmap
│               ├── Pods-project-headers.hmap
│               ├── Pods.dep
│               ├── Pods.hmap
│               ├── Pods~.dep
│               ├── build-state.dat
│               └── build-state~.dat
└── build-iPhoneSimulator
    └── libPods.a

24 directories, 31 files

view_controller.rb

# -*- coding: utf-8 -*-
class MDEditViewController < UIViewController
  def viewDidLoad()
    super

    navigationItem.title = "hoge"
    view.backgroundColor = UIColor.whiteColor

    @textView = UITextView.new.tap do |v|
      v.frame = view.bounds
      error = nil
      markdown = "# Example\nWhat a library!"
      htmlString = MMMarkdown.HTMLStringWithMarkdown(markdown, error:error)
      v.text = htmlString
      v.textColor = UIColor.blackColor
      view.addSubview(v)
    end
  end
end