On my home PC I have a copy of Lightroom 3.6 which was built up from earlier viersions of Lightroom (versions 1, 2 and version 3). I have the disks for all three versions, each being an upgrade of the preceding version.
I would like to put Lightroom on my travel Mac. Do I need to successively install it beginning with the first or can I simply install Lightroom 3 and then download 3.6? Alternatively, if I purchase the lightroom 4 upgrade, can I simply install it on both machines?