ganuonglachanh Strange, after few hours - I turned on the server and it works perfectly.
However, I have a suggestion for you: Could you make that in the future: after marking the text, the second press on the same button would remove the markup around?
The reason I'm asking this: http://i.cubeupload.com/8fdWiY.png
It is useless to make double or triple markup on the same text.
(second and more press just keep adding the asterisks - instead make it remove already existing markup)
That would be great!