Spoiler Tag Problem

I have enabled Button Bar, Spoilers, and NBBC plug-ins. I've made sure that the line to change InputFormatter to BBCode exists in the config.php file. This is what the spoiler tag is doing currently when creating a new discussion...
http://i.imgur.com/7fdjykk.png
Any ideas? Thanks!
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Comments
I disabled NBBC and left the InputFormatter as BBCode and it's working now.