I am currently following the guide but I am now stuck. I can't get the onestep page to display as the guide has been intructing, I'm not sure if it is down to the rwd theme being used. Around the 50min mark the guide basically says they are assuming you are using the default theme. So in the guide they have you create files in app/design/frontend/default/practice and skin/frontend/default/practice . then in the app/code/local/Practice/OneStepCheckout/etc/config.xml the guide ask you to create a store block with the second element named default.
<store>
<default>
So I then duplicated all of the files generated throughout the tutorial and placed them under rwd instead of under default and in the config.xml
<store>
<rwd>
http://www.magentocommerce.com/wiki/4_-_themes_and_template_customization/0_-_theming_in_magento/des...
but i still only get a blank section where the cart should be on the page. has anyone completed this guide using rwd/magento 1.9.1.1?