I have noticed that occasionally when the Grand Tour animation is launched, the keyboard commands are not recognized in that window so there is no way to control the parameters of the animation. It seems to occur only intermittently, and on only one of my machines. Exiting the animation and performing a mouse-related operation on the parallel coordinate plot restores the keyboard functionality, after which the Grand Tour can be re-initiated for another attempt. Even then, it should work most of the time. It appears that clicking the mouse on the Grand Tour window prior to using the keyboard may help mitigate this situation. I hope I'm the only one who has experienced this.