title: Python App Won't Open (Built with py2app)
body: <p>Using wxPython and building it with py2app, I tried to build a barebones basic gui application.  When I open it however, the dock just stutters as if it were going to open something, then it doesn't.  Any idea why?</p>
  
  <p>I am running OS X 10.10.2 and python 2.7.9 and wxPython 3.0.2.0 osx-cocoa (classic)</p>
  
  <pre><code>import wx
  
  class MainFrame(wx.Frame):
      def __init__(self, parent, title):
          wx.Frame.__init__(self, parent, title=title, size=(400,200))
  
          #Creating the menu
          filemenu = wx.Menu()
          filemenu.Append(wx.ID_ABOUT, "&amp;About", " This is the about panel.")
          filemenu.AppendSeparator()
          filemenu.Append(wx.ID_EXIT, "E&amp;xit", " Terminate the program")
  
          #Adding the menu bar
          menuBar = wx.MenuBar()
          menuBar.Append(filemenu, "&amp;File")
          self.SetMenuBar(menuBar)
  
          self.Show(True)
  
  app = wx.App(False)
  frame = MainFrame(None, "Hello World")
  app.MainLoop()
  </code></pre>
  
  <p>And the setup.py file looks like</p>
  
  <pre><code>from setuptools import setup
  
  APP = ['sample.py'] #main file of your app
  DATA_FILES = []
  OPTIONS = {'argv_emulation': True,
      'site_packages': True,
      'arch': 'i386',
      'plist': {
          'CFBundleName': 'GUI Sample App',
          'CFBundleShortVersionString':'1.0.0',
          'CFBundleVersion': '1.0.0',
          'CFBundleIdentifier':'com.cclloyd.guisample',
          'NSHumanReadableCopyright': '@ cclloyd 2015',
          'CFBundleDevelopmentRegion': 'English',
      },
  }
  setup(
        app=APP,
        data_files=DATA_FILES,
        options={'py2app': OPTIONS},
        setup_requires=['py2app'],
   )
  </code></pre>