Only CB 1.7 RC is rated for Joomla 1.7. Templates as of now are still only J1.0, J1.5, J1.6 tested and rated. We will provide updates when time permits. Please understand J1.7 has just released and our priority is to ensure CB it self supports it. Do not upgrade to J1.7 and CB 1.7 RC on a production environment with an active community where stability is of high priority, please allow time for other developers to prepare.