Hello, all. I originally purchased Parallels Desktop 3.0 on April 8 of 2007. I upgraded my operating system to 10.5 today; when I started up Parallels subsequently, it hung. So I restarted my machine, went to the Parallels website, and read that I should upgrade to 5160. BTW, when I "Checked for Updates" while running Parallels it said that my build, 3214, was current. In any event, I downloaded the 5160 update, ran it which converted my VM, and it then asked for my Activation Code, which I entered. I then got the message that my Activation Code was not valid with this version??? I bought 3.0 and have the invoice to prove it (was done online). Any ideas what's going on here?