With the announcement of the Motodev core plugins being included in the AOSP tools (http://developer.motorola.com/tools/motodevcoreplugins/), I have been trying unsuccessful
After two days I got MOTODEV Core Plugin to work in Eclipse. In general follow these directions http://developer.motorola.com/tools/motodevcoreplugins/
I got it here: http://download.eclipse.org/eclipse/downloads/eclipse3x.html
ADT https://dl-ssl.google.com/android/eclipse/
http://download.eclipse.org/sequoyah/updates/2.0/
4.When installing MOTODEV, Remove MOTODEV packages you don't need like linus, macos and com.motorola.studio.android.wind32.x86_64
At this point, there should be no errors in your project.
Now to run MOTODEV, select package com.motorola.studio.android and run as 'Eclipse Application'
Next a window will open that has the MOTODEV menu in the main window.