I just returned to the game, updated to 1.71, and notices a graphical glitch that wasn't there before. The ball doesn't show up on the screen, and the little flash boxes (with play results) don't appear either .... unless I'm moving my mouse around at the time, and then everything appears normally. But if my mouse isn't moving, they don't show.
When you manage a game, check the Play Options box near the top. Therein you will find check-boxes that turn on and off all such features, from the ball flight to the 'appearance' or lack thereof, of theTeam Information windows, Information/Lineup windows, etc.
It's possible that you may just need to check or uncheck a box or two to solve your problem.
I could have sworn I put this under tech support. I don't manage games, so I wouldn't think that would be it. Bizarrely, after two days of the problem, it seems the solution was ... posting here. It's working correctly now, and not because of anything I did in the program.