[Desiderata2001]

Wow, finally success! I read the article and figured out which video card was working as my main display. Then I rearranged my displays in system preferences. It has been a few weeks since I tried working on this problem and finally an answer. I am using four monitors and I could have sworn that I tried it on all of them. I am just starting to teach motion and now my students will be happy! Thanks again!