I came across this addon since it does exactly what I need at the moment. Actually it works very nice, but only if the WYSIWYG editor is enabled. I normally usw the HTML editor and have the other one disabled in my profile, but then this addon failes to load (editor = w.tinymce ... is nil) and the thumbnails are missing. If I enable the editor (even if I then use the HTML one) it works fine.
Any way to "fix" this ? Thanks