This is the most irritating StumbleUpon bug I have come across. What makes it really irritating is that none of the toolbar updates have gotten rid of it.

I have a habit of tagging pages which I see and like. That’s why I have the tag search box enabled there. And most of the time, it works like a charm.

And then out of the blue, something goes wrong, and after typing the tags in - in this case, SEO, google, search - this message pops up.

It tells me in great detail that I should type in some tags in the text box above. What the…? That is what I was trying to do.

The only way to get the tag text box working again is to close the browser and start again.

I really wish I knew why this stupid error keeps popping up.