WordPress 2.2.1 may be “required” – but on every install, I wasn’t getting the visual text editor, TinyMCE to display. After uploading, re-uploading, clearing cache, shutting off the “use visual editor”- turning off and on plugins- I finally gave up and loaded Dean’s FCKEditor– which gives you all kinds of cool tools that aren’t easily available in TinyMCE. (See picture above).
I’ve been through a ton of WordPress upgrades- and most have been painless. This has not.
After spending 6 hours -I was able to update 4 installs successfully with TinyMCE – but gave up on the fifth and went with Dean’s solution.