Hello. I am trying to install LR 4 onto my new computer. I get a message that says Creating new catalog, CR cannot create a new catalog named "Lightroom 4 catalog"on Volume "Windows (C:)" because Lightroom cannot save changes to this location. When I got this new computer, I had some copy all of my folders into a backup folder on my desktop. Should I rename an old folder? Thanks for your help!
This is probably a problem caused by not having write permission to the folder where the catalog is going to be stored. Yoou need to go into Windows and change the permissions on that folder. The default location for the catalog file is given here: Where to find Lightroom 4 preference files