I updated a few days ago from ACR 6.2 to 6.3.
In the Camera Calibration tab, the only profiles shown under "Camera Profile" are "ACR 4.4" & "ACR 4.3".
The profiles I had before ("Camera Landscape", "Camera Portrait"..) are not there anymore
How do I get those back for different bodies (Nikon D300, D700..° ?
If you're on Windows 7 or Vista, the Camera and Lens profiles should be under:
If not then perhaps you uninstalled some other Adobe product that removed the profiles. Try downloading and running the installer again from:
If necessary, select Camera RAW at the top.
FYI, I have 63 megabytes in 676 files under: C:\ProgramData\Adobe\CameraRaw\CameraProfiles
Keep in mind the ProgramData root folder is usually hidden on a modern system, so you may have to type in the path in the Explorer address bar.