When the text of a ticker object is not displayed on the screen, this may be due to the following reasons:
There is no contrast between the color of the text and the background picture. Solution: Choose a different color for the text. This can be done in the Ticker field properties or by applying color control via keyframes.
If the text still does not appear, the ticker track may not be linked up with the ticker field. Solution: Assign a ticker field to the ticker track. See also Displaying text in a show.