MyBB Community Forums

I have an starnge problem that
youtube videos not works in my forum
I am using Mybb 1.6 also installed Automedia plugin
but videos looks like this




I have tried with both methods with tags & without tags
with tags it apears like this

Looks like you've setup a smilie or something to replace ? with an image, which is breaking the URL.

Thanks A Lot to you,
Problem solved... the sign was "?"
I removed it from smilies list,