Kirk,
just as I said in the other thread - it used to work just fine in 4.5.2 RC but seems broken in 4.5.2. It does not sort the structured keywords neither on my main machine nor on my laptop. The first one runs Win XP Home SP2 and the laptop - Win XP Prof SP2. It would be great if you found the bug because it is difficult to use the structured keywords otherwise...
All the best
Wiesiek