Encore buttons not showing up

I have authored and burned a DVD with 2 menus (Main and Chapter Selection) with simple round buttons. The button selection, routing and highlighting works in the Encore CS4 simulator as well as my Mac Pro DVD Player. However, when played on a DVD player hooked up to a SD TV, the buttons either don't appear at all or a slightly visible outline/interlacing scan appears.

Any advice on how to get the buttons to show up on a television? I created them in Photoshop CS4 using the methods described here:http://www.videocopilot.net/tutorial/dvd_authoring/ (at the 26 minute mark).

Thanks for the help!

-Brock