[Shirik]

Contrary to what was posted earlier, I would advice against learning Ace first, and recommend learning the basics first, that is, what Blizzard supplied you. Yes, Ace can make some things easy (sometimes too easy), but it's most useful to people who know what they're doing. If you learn Ace first, you're going to end up knowing Ace, and only Ace, and that will only hurt your code. Ace can't do everything, and in some cases it can hurt you. Using it is your own prerogative, but it's vital that you understand the basics before you move on to abstraction.

The same goes for the UI designer.

In any case, if you're having trouble building a slash command handler, you're probably setting it up wrong. Why not post your code so we can take a look at it and see what's wrong. It's probably something simple, as are most annoying bugs.