
Just as a side note: neither PC shows the codec in System Information.
I made some small changes to the code and now the Load seems to be working - mostly. Now it looks like I am facing a race condition of some kind. I am loading the same movie onto three monitors. With my home PC (about 8 yrs old) it works just fine. Running on a newer and faster PC it gets hung up if I let the program run. I cannot even get the program to pause within the programming environment, I have to kill the program. If I single step through the code it works OK. The sequence for each of the three monitors is: LoadMovie, MovieAudio, ResizeMovie, PlayMovie then PauseMovie. I believe it is getting hung up on either the Play or Pause statements. Next I will be inserting a Delay statement somewhere in the sequence for each monitor. Any ideas will be helpful.
I put a delay preceding some statements. It now works.