I gather there is a maximum to the number of activations possible. I bought Sony Vegas Platinum 9 along with DVD Architect and Cinescore studio in November and installed it on my home machine, office machine and laptop. Recently I upgraded all three machines and managed to reinstall on two, but my laptop balked. I suppose I must have reached my maximum number of activations. Even more frustrating is that my Sony VAIO laptop comes with Adobe Premiere pre-installed. Apparently Sony wants me to use Adobe? Very strange!