I'm using lightroom 4 on my personal computer, and lightroom cs6 on my work laptop. I have another computer I'll be using for work and I wanted to use the compatible version (cs6) on it. Will I have to deactivate one of them? If so, will I lose any work on one of the computers?
The Lightroom license allows you to install the program on two computers for your personal use. Each installation will have its own catalog and access to images. If you want to work on the same images on both computers then it would be best to put the catalog and the images on an external hard drive.