Install the latest version of the Camera Raw plug-in that your version of Photoshop or Photoshop Elements is compatible with. (See Camera Raw-compatible Adobe applications, if necessary.) For example, if your version of Photoshop is compatible with Camera Raw versions through 4.6, then install version 4.6. Install the latest version even if you only need version 4.3 to enable support for your camera.
Note: Generally, each new version of the Camera Raw plug-in builds on the cameras that the previous version supports. For example, Camera Raw version 4.4 supports all of the cameras that version 4.3 supports, plus additional cameras. Version 4.3 supports all of the cameras that version 4.2 supports, plus additional cameras, and so on.
Installation instructions are included on Camera Raw download pages, which you can find at http://www.adobe.com/downloads/updates/.
With current-release products, you can update to the latest version of Camera Raw automatically through Adobe Updater or the Adobe Application Manager (CS5 and later). In Photoshop or Photoshop Elements, choose Help > Updates.
Instructions and supported camera information can also be found in the following TechNotes:
If you still cannot open photos from your camera, then proceed to Solution 2.