I can't open my the TRACK MOTION WINDOW.
I clicked the track motion button to diplay the window, but the widow no appers, i didn't have probles before, I do not whats going on
Single monitor? Is it possible the window is positioned outside the visible screen?
Select View->Window Layouts->Default Layout and check if it is visible now. You may want to first save your current layout if it is important to keep it, so you can restore it, and the above is not the problem.