Mental Ray not working in Maya 2015
I recently installed maya 2015 and just yesterday realized that Mental Ray is not loaded into the plugins. I did the usual by configuring the plugin manager but nothing changed. Based on online documentation Maya requires SP6 so I installed it and still nothing is happening. I'm left wondering what the problem may be?
Is it possible that I need to install all previous versions of the Service Pak or would the latest version, SP6, cover all the previous ones?
In any case, I'm still stuck and would appreciate any help from somebody who understands what and were the problem is.