Loop Select hot key not working on a mac.

I just purchased a new 27in iMac. This is my first apple product, besides my 2011 iMac that I have been using for a few months at work. So I am new to blender and apple.

My issue is that the loop select function alt+LMB does not work. It appears to be mapped correctly in user preferences. I use this keyboard function at work all of the time and blender accepts it just fine. The only difference is my new mac has a usb keyboard with numeric keypad and the old mac has a bluetooth keyboard with out the numeric keypad.

There is also a chance that I tried to hit one of the number keys when changing views instead of using the numeric keypad. I am unsure what these keys do, so I may have messed something up.

I hope this makes sense. Any suggestions will be greatly appreciated.