Game halts on one senario...

[Shenzu Shikiru]

The game halts on the last senario needed to unlock the breeding center, but does not close. If I open up Windows Task Manager, then I can get back to my desktop, close the task manager, and reopen the minmized game, but it will shortly do the same thing again. I  have tried restarting both comp and game, and cannot get it to stop. Can someone please help me out?