@DustKart......
Run DxDiag.......Click Start.....In the search box type dxdiag....The .exe should show.....
Click on it to run and check you only have one display showing.....
In PB1 I could not launch and it was down to a program I had called "I-Display".......DXdiag showed it as a second display and was interfering with the ED launcher...Some kind of DX hook or something.....
I removed this program and bingo I could see the launcher...........