http://manual.b2evolution.net/Tinymce_plugin#Version_0.6

I've seen that. It still doesn't work. No matter what I set the file path to. I get a 404 error message on the TinyMCE script. Nor can I find anywhere to download that specific version of the javascript, because it's not a current version of TinyMCE.

Well, Morrighu, it works on http://demo.b2evolution.net/ ..
You need to be more specific about the error..