After another restart it is ok now. I suggest you to restart the computer and without starting anything else, start the wallet 1.6.0 exe and wait for it to load . Don't start any other applications! Try!
your using wallet 1.6.0? im using 1.4.1 i thought the other versions were all broken. i tried 1.6.0 the other day and it didnt work maybe ill try again.