Failed to launch game

I've got exactly the same problem.  I've tried on two different laptops, same results, been trying for 3 days now.  I've gone through all the suggestions above.  The game has been working on one of the laptops previously, but now I get the Failed to launch game message.  I therefore tried loading one the other (newer) laptop and get the same message.  Is there a problem centrally?  Both laptops easily meet the spec required and, as I say, the game used to play perfectly on one of the machines. Help please.  If you need any log files or anything just let me know.