In my apache logs I see a redirect loop occurring. With rewrite engine logging I see:
123.123.123.123 – – [28/Feb/2011:10:44:10 +0000] [foo.blogs.foo.org/sid#98e6ba0][rid#a2e64c8/initial/redir#9] (5) strip matching prefix: /www/blogs/WWW/wp-content/plugins/mm-forms-community/tinymce/plugins/mm-forms-community/editor_plugin.js -> wp-content/plugins/mm-forms-community/tinymce/plugins/mm-forms-community/editor_plugin.js
123.123.123.123 – – [28/Feb/2011:10:44:10 +0000] [foo.blogs.foo.org/sid#98e6ba0][rid#a2e64c8/initial/redir#9] (4) add subst prefix: wp-content/plugins/mm-forms-community/tinymce/plugins/mm-forms-community/editor_plugin.js -> /wp-content/plugins/mm-forms-community/tinymce/plugins/mm-forms-community/editor_plugin.js
123.123.123.123 – – [28/Feb/2011:10:44:10 +0000] [foo.blogs.foo.org/sid#98e6ba0][rid#a2e64c8/initial/redir#9] (1) [perdir /www/blogs/WWW/] internal redirect with /wp-content/plugins/mm-forms-community/tinymce/plugins/mm-forms-community/editor_plugin.js [INTERNAL REDIRECT]
Could this be related?
If I comment out line 53 of mm-forms.php the plugin works and the tinymce buttons in edit mode work again (except the mm-forms buttons are missing (which I can live without for now)).
Cheers,
Matt