Can't even play the trial weekend.

So I got my code last night from a friend, and leave the download on all night.  I get back from work today, and am very excited to finally get to play the game, when the launcher decides it's going to give me a error and say check my internet connection, which is fine.  I went online and checked for solutions, none of which were relevent for my situation.  The only option is to completely reinstall it, which might not even work either.  So I don't even think I'm going to be able to play, which kind of turns me off to buying the game.