Hi Greg,
I have a Canon 60D and use CR2 raw files and I use the Blink process to review them without any problems. If you go to your Format Explorer window (start with the View pull-down at the top) VIEW/EXPLORER WINDOWS/FORMAT EXPLORER and scroll down to RAW option and single click it. You will see all the format types PI processes. If you double click the RAW option you will get the RAW Format Preferences window. Select the PURE RAW button on the bottom left to set up the format to correctly process the CR2 files.