(resending this to the whole list)
I guess that you redirect on your wx.App?

app = wx.App(False)  # Create a new app, don't redirect stdout/stderr to 
a window.
  
Right (I didn't even think to look at how I'm creating the app...argghh)

What's happening is the xrc resources aren't getting loaded. I used xrced to create the gui.

Rick