Spoiler tag's wont work

Well I ran into a little problem here I can't seem to open spoiler tag's anymore, for me it only shows "Spoler:" as a text
Any suggestions how I could fix that ? =(
I heard that can happen if your javascript is disabled but I checked it its not
Btw Im using Firefox

if you're using Firefox, don't block https://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js

Wow thanks this really helped <3

Speaking of spoilers. Jacob, there's a bug with them. If you make a /spoil bb command without having made the command for opening a spoiler beforehand, everything after that will not appear in the post.

Like so [/spoil] nothing appears.