I had a big problem when I installed and configured Wysiwyg+FckEditor for a Drupal 6.x. site because “print $closure” was missing from page.tpl.php. – wysiwyg toolbar didn’t appeared at all.
- $closure
- “Needs to be displayed at the bottom of the page, for any dynamic javascript that needs to be called once the page has already been displayed. ”
http://drupal.org/node/11812
So, if you have dynamic javascripts don’t forget to check if you have “print $closure” in your page.tpl.php.