ember "Uncaught Error: Could not find module handlebars"

Uncaught Error: Could not find module handlebarsember.prod.js:35

I am using requirejs with ember 1.9.1 and handlebars.runtime 2.0.0.

My Shim:

shim : {
    ember: {
        deps: [
            'jquery',
            'handlebars'
        ],
        exports: 'Ember'
    },
    handlebars: {
        exports: 'Handlebars'
    }....

I keep getting this error:

Uncaught Error: Could not find module handlebars

Is 1.9.1 compatible with handlebars 2.0.0? When I rollback to 1.3.x the error goes away.

Any ideas what is up with 2.0.0 and what the fix is?