Hotkeys to change viewport (Maya preset) won't work, why? I'm using Maya presets. The hotkeys don't seem to work ether in 3D or Quad view. 

It doesn't really bother me in 3D View but it's a problem in quad as I can't seem to change my Top Ortho view to Back Ortho view to adjust for my reference image.

Keybindings show that I should press Ctrl + Numpad Number key, but it doesn't work, I unlocked the view-ports under "Display" and nothing happens.

When I tried it under Blender default settings it worked perfectly.
Also I tried this on two separate computers with different scenes, same result.

I'm a beginner in Blender.
http://imgur.com/K6UFnfw
Everything works as expected, it's just that the keybindings assume Ctrl+0 should be pressed in order to activate front ortho view according to the Maya interaction preset (not Ctrl+Numpad 0). 



If numbers from Numpad were expected it would be visible from this setup.