Because you need to clear your browser's cache. All of the DVD covers are part of one big image called a "sprite". When you add a workout to your calendar the first time the single sprite image containing all of the DVD covers is cached on your computer. We then use CSS to add only the DVD cover from the single Sprite image you have selected each time. This makes the load speed much faster when using the Workout Manager since your browser does not have to download an image from our server after the sprite image has been cached on your computer. Until you clear your browser's cache you will still access the old sprite image which does not contain the ICE DVD covers. Hence the reason you're not seeing the ICE DVD covers when you add a workout to your calendar.