Product review (3 stars): Easy Mount.. Easy Mount Can Bite Me
Here's what's wrong with this stupid thing and I assume others are having the same issue.  There's a part missing.  If you have an existing disposal then this is how it works.  You have your "InSinkErator" mounting system (the one with the three screws) that is attached to the sink.  Well when you took the old garbage disposal off, there's a piece on the garbage disposal that you need that was mounted to that mounting system.  If you're doing a brand new install or threw the old garbage disposal away you're screwed.

So here's everything you need:

Your new garbage disposal with it's Easy Mount system (again bite me).
The adapter this review is about.
The Insinkerator mounting system (that is attached to the sink)

AND

You need the piece off the existing garbage disposal.

I'm sure most people are doing the same thing I am.  You've bought an InSinkErator mount because.. well.. you can FIND one in the finish you want at a Home Depot or Lowes and you're trying to attach the garbage disposal to it.  Can't do it without that other piece from the old disposal though.  (I'm not sure if you can buy it yet).

This piece SHOULD have been included.

Yeah.. Easy.

Disclaimer: It IS relatively easy to mount if you use their existing hardware.