Update 6/27/2010: This apparently works for Wordpress 3.0 on Hostgator as well. See comment below.
So, since I couldn’t find any real good documentation on the subject, and Dreamhost’s tech support didn’t know the answer, and I recently ran into this issue on a client’s site, here is how you fix the “tinyMCE visual editor not showing up” bug in Wordpress 2.5.x. For reference, the client site in question was running in PHP5x. These instructions only apply to Dreamhost hosting, although similar tactics may work on other hosts:
