Howdy - I've got a rotating sig, but it's not allowing me to have a rotating avatar

I'm getting this message

"That is not a valid URL for your Photo. We do not allow dynamic pages in the IMG tags"



URL - http://signavatar.com/14213_v.gif

I don't understand why it won't let me help please!

cheers

Nevermind - been informed by someone that you can only have 1 avatar at a time - fair enough. Can be closed