Loaded PD11, set up by the windows prompts, and shadow was chosen, to speed up video viewing. On we go, load files, edit produce, repeat, and come back at a later time, to find a green preview screen to the right corner of the monitor where you view the video. No matter what you do your program fails to work right.
Stop, and right click on the green screen and you will see a number of choices, and choose preview quality, some how it was changed by automatic settings, and once you lower y our quality, the green will go away and problem solved.
this is a note, and reminder if any one comes into this issue, thank you