if you've got a shortcut to fm on your desktop. right click properties, where it says target: "....\fm.exe" add this to the end after the " --reset_preferences
worked fine for me when the same error occured two hours ago
just have to edit your settings again when you start the game. AND REMEMBER TO REMOVE IT FROM YOUR SHORTCUT AFTER STARTING UP FIRST TIME. so you don't have to edit your setting everytime you start the game.
edit: seems like the last 3 versions have had this problem, as when i google it it comes solution for fixing it for fm2008,09&10...