I selected a widescreen layout for my Dynasign Player, but my LCD panel couldn't display the entire layout. What did I do wrong?

Most 15" LCDs can only support up to 1024x768. Widescreen layout such as 1280x768 requires both your PC and your display panel support the widescreen resolution. If your pc doesn't support widescreen resolution (check Control Panel->Display->Settings), your display will be cut off.