#10 Mac Dock quit doesn't work.

[Larry Rogers]

OS = OS X Leopard (10.5.8)
SketchUp version = 7.0.10428 (Free version)
After adding "require 'wxSU/lib/Startup' to the top of my plugin as guided to in the Getting Started the following behavior was observed.
The extension is in the plugin directory but it is not loaded (not enabled in SketchUp preferences).
Right clicking the SkecthUp dock icon and selecting quit does not terminate SketchUp anymore.
Without the require quiting in this manner does work.
I can still quit by selecting quit from the SketchUp menu or type CMD-Q in the SketchUp window. Just the dock quit doesn't work.