I got the following error, but my signature is the same it has always been, there are no smilies, vb codes, or html thingies in it, just a couple words.
"You have included too many images in your signature or in your previous post. Please go back and correct the problem and then continue again.
Images include use of smilies, the vB code [img] tag and HTML
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tags. The use of these is all subject to them being enabled by the administrator."