I have Win7 32 bit and I've not encountered the same problem.
I start the games from the icon "Run game" and when I press X, visplayer immediately disappears from memory. This is all very strange.
I use the english version of the Editor.
Yea thats what I do also . and yea its very wierd. I'm using win7 64. I used quit, ctrl+F4, X and all same ... :\