Also what operating system are you running? You previously wrote:

"ok, I guess it is minimizing but it just doesn't appear on the task bar."

But that is in itself a kind of weird situation because normally programs should be shown on the task bar just when they are running, no matter if they are maximized or minimized.

Do you mean that when you initially launch MoI it does not show anything for it on the task bar at all?

- Michael