Thanks for the replies! Ok, I uninstalled completely, reinstalled 1.5 and used the reg code I got when I ordered (it was right on my initial receipt.) Finally when I installed 1.5 again, an activation box popped up asking for name and reg code. I entered both and now it's saying activation error?! Do you think the code I get in the email is going to be different than the one I got on the receipt? It does say that it's the "serial number", so I figured it would work, but it just keeps giving me an error.