mira actualmente estoy usando este .. y a mi me funciona super bien
Código PHP:
<!-- TinyMCE -->
<script type="text/javascript" src="../jscripts/tiny_mce/tiny_mce.js"></script>
<script type="text/javascript">
tinyMCE.init({
mode : "exact",
elements: "editor",
theme : "advanced",
theme_advanced_buttons1 : "fontselect,fontsizeselect,undo,redo,separator,justifyleft,justifycenter,justifyright,justifyfull,separator,outdent,indent,bullist,numlist",
theme_advanced_buttons2 : "bold,italic,underline,strikethrough,forecolor,backcolor,separator,removeformat,cleanup,separator,charmap,image,link,unlink",
theme_advanced_buttons3 : "",
theme_advanced_toolbar_location: "top",
theme_advanced_toolbar_align: "center"
});
</script>
<!-- /TinyMCE -->
espero te sirva .. suerte ..