I have the latest version of yetanotherforum.

I am trying to put in the html editors so it has the options that are on this page. However when I change the editor the text box that you type in the message dissappears and the editing buttons (ie bold, links, ...) don't show.

Am I missing something?

Do I have to download editors?

http://freetextbox.com/default.aspx  and download and install the latest version.

Put the freetextbox.dll into your bin directory.