Just so we are clear we are talking about having issues recording the gameplay of the game Big Box launched, not of Big Box itself, correct? If yes you may need to make sure that the application in question isn't running in exclusive fullscreen mode. Applications running that way generally are talking to the vid card directly so any software that uses OS functionality to see/record the screen will no longer work. To test this try and set the game you are launching to run in window mode or borderless fullscreen and see if it resolves your issue.