At times when I start Serato Video, the Serato Video interface (preview windows) does not display anything (just blank). The secondary output window will open up, but not the preview window. I've been able to get it to work after restarting computer and software several times. Just wondering if there was an easier way to optimize this setting to make it a quick plug and play. Using Macbook Pro 13-inch (early 2011 model). Thanks.