On updating to Lightroom 5.7.1, program will not load. Original program was purchased with cloud on 12 mos subscription. Looks like it needs serial number which I cannot find. How do I find out serial number? Thanks Graham H
You have to install the Lightroom 5.7.1 program from the Adobe Creative Cloud Application manager.
If your LR installed application is requesting you to input a serial number then you probably have the Perpetual Licensed version installed. You will need to uninstall this application using your normal operating system procedure, this will not interfere with your catalog, preferences or personal files.
Open the Adobe Creative Cloud application Manager and sign in to your account, Lightroom should then display Lightroom available for install. Proceed with the installation..