I ran into the same bug while doing the basic UI tutorial (made for iClone6) on iClone7 after I purchased it. (The learning pages suggest that new users should go do the iClone6 tutorials to cover the basics). When I got to the point where delayed launches of a simple rocket are to be simulated I could not get the model to do what was shown in the tutorial. It was quite vexxing for a user who has never used iClone before and I kept trying different things over and over because I thought I was doing something wrong. Finally I gave up and assumed it must be broken in some say. As described in the YouTube Video.