If I edit an existing page or post this configuration works exactly as expected, with all relevant styles and classes etc., applied to the content, and with a Format button visible on the toolbar.

However if I attempt to add a new page or post then TinyMCE opens with its default settings and no Format button visible. Once the new item has been published or saved as draft, and one navigates away from the add new page/post to a different location in admin and then “returns” and edits the item the editor.css has been applied, the format button is available and content can be styled as it should be.

Configuring TinyMCE to use the current theme’s style sheet makes no difference to this behaviour.

I’ve tested with Firefox 3.n, IE 6 7 & 8 and Opera [all on Windows but I can do the tests under KUbuntu if required] and cleared down the caches on all browsers, in all cases with no change. I’m not inclined to believe this is a browser issue.

I don’t believe there’s an issue with caching anywhere else upstream because I can reproduce the issue quite directly on a duplicate installation on my local ubuntu apache development server.

Have even gone so far as to deactivate TinyMCE and WP Super Edit, delete all files, reinstall and then reactivate them; this too made no difference.

I’m stumped. Any ideas?

TIA

Robert