I am cc. when using camera raw & change the exposure/bright/dark sliders etc.. It is not letting me save them to my MacBook pro with the message - Unable to save raw conversion settings - there's a write permission error?
Yes, that sounds like a permissions problem. How are your Camera Raw preferences set? Do you write the changes to the Camera Raw database, or to XMP sidecar files? If you write to XMP, then it's important that the disk/folder where the images reside has write permissions.