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Installation in maya 2015 Sp5 mac Yosemite 10.10.3
User/Library/Preferences/Autodesk/maya/2015 (year version)/prefs/icons
User/Library/Preferences/Autodesk/maya/2015 (year version)/scripts
Important
Copy and Paste this section of code to launch the UI. Or open Script Editor / phyton tab
Make sure you set it to Python. (verify Python only)
import gui
reload(gui)
gui.windowUI
It worked for me
