Every time i start the game i get a pop up promt asking for my serial key. I copy paste the key, but nothing happens. The promt just flachses and still asking for the serial key.

I have bought the game via impulse.
Same thing happens when i try and start the game via impulse.
The game are registeret and every thing is fine except for the problem with the serial promt thing.

Can anyone help me please?

Cheers
Thomas