GD4 to GD5 things are not working perfect...?

Well first I have successfully integrated the previous file into new version, from gd4 to gd5. But things are a bit odd. Everything, so far, was fine in the previous version. But in this version there are too many problems. first off all the UI menu of the game is not going back. if I select some options, they change the menu perfectly but when I press escap to go back, it just doesn’t go back??? And most importantly why I have to preview all the game…? I just want to test a scene, but when I select preview it load the whole game? :confused: