Had this installed on WP3.3.1. Worked for a bit when I first installed the plugin.. When I went to blog a new post I noticed that it no longer works. Checked my old blogs and they are all broken as well. I upgraded to the latest version and still nothing. Essentially, when I insert an Stextbox tag, only the text I put within the block shows as if I just dumped text to my posting, and it is not encapsulated within the textbox. Example here: http://www.plastibots.com/?p=2174 (when I first posted this, all the source code at the bottom was within your textbox.