I have mid 2012 MacBook Pro running Mavericks. I am trying to connect it to a Toshiba TLP-S10 projector. It displays only the wallpaper and the app bar. All other windows won't display. I've tried all of the connection options shown on the projector screen without success. The "Air Play Display" button in the system preferences is not detecting the projector. When it is plugged into the computer the app bar disappears from the MacBook but displays on the wallpaper image that is projected