I am shooting with a canon 70D in RAW trying to import into Lightroom 3 w/ the latest updates on an iMac v 10.8.5. Get a message back saying it does not support or recognize the file, .CR2. Canon has no updates for the camera
You need Lightroom 5.2 or later for that camera. Two choices:
1. Upgrade your Lightroom.
2. Use the DNG converter 8.2 or newer.