[fatal1980]

As a temp fix:

in the BB code manager:

add:

Title:
Spoilers

BB Code Tag Name:
sp ( or whatever you want)

Replacement: (from the VSQ template)

<div class="spoiler">
<h2>Spoiler</h2>
<div class="hidden">{param}</div>
</div>

Example:

[sp] this is a test [/sp]

Button Image:
http://www.yourdomain.com/images/editor/spoiler.gif (if you want an image in the advanced editor)