Lightroom :: Unable To Import Or Recognize Nikon D800 RAW Files On Mac

I've been trying to figure this out for over a week since I got my D800 and am not making any progress.  I am using LightRoom 4.1 and Adobe Camera Raw 7.1 on a Mac OS X v10.6.8.
 
I read that I need ACR 6.7 in order to recognize the D800 NEF files, but I don't know how to remove 7.1.  I tried deleting ACR from my .library folder and reinstalling 6.7 but it still says it's 7.1 when I open up LR4.1 again.  Also, I only have Photoshop CS5 and I read that 7.1 supports the D800 NEF files in CS6 only.
 
On a probably unrelated note, I bought the educational version of LR4 and when I go back to my email that contained the download link, it shows a blank page on "My Orders" even though I've purchased this and other educational versions from Adobe in the last few years.  I got the LR4.1 download file and reinstalled after removing the release candidate I was checking out, but wasn't prompted for my registration code that was in my purchase email.