I have just purchased a new computer. Some time age I purchased Adobe Photoshop Lightroom 3 package which includes the disc. Since them I upgraded to 4 online without the disc .How do I upload without the dosc, I have the serial number for version 4 and have been using it on my old computer.
You will need both License Keys the Lightroom 4 upgrade key and the Lightroom 3 key. You can download the latest LR 4.4.1 from the site below. Just make sure you get the appropriate one for your operating system.
Install then you first enter the LR 4 upgrade serial number and then the LR 3 serial number when prompted.