From: Cleveland, Ohio
I had the same problem. Check your order email. It should have the license number there. After I did that I had no problem with the install.
Happy New Year!
The order email didn't have it, but the vendor kindly sent me the correct serial number when I emailed them directly.
So far, I like the game. The more I play it, the more I like it. It has a great level of depth, which I like a lot.
I find it impossible to play with the aircraft icons, though. Too big, too much clutter. I liked the system in DtR, where you had a simplified icon to represent your bombers and the enemy fighters. These icons are too big with more detail than is necessary.
The 'boxes' and flight lines are nice, but in a game this beautiful to look at one would prefer to see aircraft icons on the map.
Also, the game/game clock seems to stutter along, instead of flowing smoothly. Is this normal? I have messages on setting '1', and most visual options turned off.
Sometimes, though, I like to have clouds on. It really increases the immersiveness.
The sound is rather strange. There's an engine sound, then nothing, then some flak, then nothing, then an engine sound. IMHO it would be far better while your mission is unfolding to have a continuous aircraft sound.
For the most part, though, I really like this game.