Hi, OK, I bit the bullet, decided to spin the roulette wheel, and tried to pre-order P6. But when I try to upgrade from P5, I'm getting a message that my serial number is invalid. It definitely isn't. I purchased P5 directly from CL, and the number can't have been blacklisted, because nobody but me has ever had access to it. Anyone else having this problem, or can anyone suggest what might be going wrong? Thanks, Morph