I've introduced a friend of mine to Construct and he's running Parallels on his Macbook. His other PC-only apps all work perfectly, yet when he tried to create a sprite in Construct, no luck. Upon opening the sprite editor window, he sees his empty sprite in the centre, but can't draw on it at all. There is also a completely black copy of the empty sprite in the upper left corner of the window, very strange. He also demonstrated to me trying to create a button. He creates one, it shows up on the object list, but not on the layout. Even dragging it from the list shows nothing on the layout. Yet, at runtime, they appear and function normally in the program window. Any ideas?