Couldn't connect to server + Missing files

G'day everyone ,

I just bought the full game of BeamNG Drive after playing the tech demo and got sent the full game via e-mail, download and installed it. But during the installation it keeps saying " Couldn't connect to server " after trying 5 times now to reinstall it plus whenever I just close down the " Couldn't connect to server " windows and try to launch the game it comes up saying it cannot fine the file BeamNGSandbox.x86.exe which has made the game unplayable and wont even launch.

If anyone can help me with this is would be greatly appreciated as the anticipation to play this game is killing me .

 

http://www.beamng.com/contactus/