Hi Mark,
I gave it a try on my 600. It didn't make a difference: the menus still don't work.
Neither did pressing the HOME button to exit. When I took a look, I thought
that was because the following was missing from the <code> section of the sudoku.xml file:
Code:
<function id="doRoot">
this.doRoot();
</function>
But that didn't get the HOME button working either. I'm stumped, I'm afraid!
Sincerely,
Ben.