Before you send shopping lists and recipes to your iPod, you need to make sure that you have it set up correctly.
Firstly, make sure that you have the iPod enabled preference and iPod name set in TheRecipeManager preferences.
Connect your iPod which will then launch iTunes. At the bottom right hand corner of the iTunes window select the 'Display iPod Options.' button.
On the resultant window you need to tick the 'Enable disk use' tick box. Then select the 'OK'