It should work for you. I followed along with the screencast (Truly awesome stuff. Build a blog in under 30 minutes!? Amazing.) using the Starter Kit 1.0.0-RC.2 which is what you would've downloaded yesterday. Everything worked fine for me. Ah, except for the Ember Data component which initially caused me problems. Turns out you have to grab it from Git and build it yourself. I only found that out from the comments on the video where it was posted on YouTube. That said, once I followed the directions I found on YouTube and built Ember Data, everything worked great and went smoothly from there on out.

Here are the instructions for building Ember Data (from a random YouTube comment):

git clone git://github.com/emberjs/data.­git

cd data

bundle install

rake

You need to have bundler installed for your version of ruby.

Then go to dist/ember-data.js and use that where it says "ember-data-master.js" in the video. Worked for me.