need help debugging highlighting on hardware players

I'm completely new to dvd authoring and using dvdauthor tools.  I have 
two standalone dvd players for testing, a Pioneer DV-333 and a Toshiba 
SD-3950, and am having difficulty generating a menu with my preferred 
dvdauthor frontend where the highlighting action works properly on both 
players.  At this point I don't know if this is a problem with dvdauthor 
or with the frontend app generating less than optimal script and am 
hoping someone can offer advice.

Here is an example of a simple one page menu with two buttons with 
highlighting action that DOES work properly on both players. When I 
press an arrow key I see the highlighting change from one button to the 
next. This was generated by Bombono 1.2.0 on Ubuntu 10.04 which uses 
dvdauthor 0.6.14:

dvdauthor.xml: http://pastebin.com/fH59K40A
menu.xml: http://pastebin.com/9A8zbaaT

Here is a second example where the highlighting works properly on the 
Pioneer DV-333 but does NOT work properly on the Toshiba SD-3950.  This 
is a different menu but is still a simple single page with two buttons. 
  This was generated by DVDStyler 2.1b2 on WinXP Pro SP3 which uses 
dvdauthor 0.7.0 but identical broken highlighting behavior is observed 
with DVDStyler 1.8.0 which uses dvdauthor 0.6.14:

dvdauthor.xml: http://pastebin.com/uribUNC5
menu.xml: http://pastebin.com/Xbrge3PA

While functioning fine on the Pioneer the behavior on the Toshiba is 
that when an arrow key is pressed the button is invisibly selected but 
there is no visible change in the highlighting action.  If button 1 is 
the default initial selection it will be highlighted but pressing any 
arrow key any number of times will never move the highlighting to button 
2 on the Toshiba.

Can anyone look at these scripts and tell me if there is something 
obvious going on that might cause highlighting to work on one player but 
not the other?

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