I have been with Adobe and pay for my CC account by the month but I have lightroom 5/7/1 and really want to update for newer features, what is best to update to and I already have a lightroom library how do I add that to the newer lightroom.
What OS are you using and more important what BIT is it, 32 or 64?
The 2015 version only runs on 64 bit OS's. So if you are running a 32bit version of Windows, 7, 8, 8.1, 10, then the only version of LR that runs on those is 5.7.1.
I realized I was using a 32bit system.