Are the corrupted due to using the obsolete Nikon Transfer v 1.x?
Try copying the NEFs from the memory card in the card-reader to your hard-drive via Explorer or Finder and see if they work any better?
Thanks ssprengel and my apology for the slow reply. I found the problem to be the installing of the Camera Raw 7.3 Update itself. Turned out there was an application I couldn't close while the down load was in progress which prevented the update from being properly installed. Something to do with Adobe Analyzer .exe. I went into the task manager and closed that application which allowed the update to be completed. Problem solved.
Thanks again and Happy New Year.