Wrong link to nodepicker!

I changed the link for nodepicker inside plugins/nodepicker.inc

new code:

<?php
function tinymce_node_picker_nodepicker_plugin() {
	$plugins['nodepicker'] = array(
    'title' => t('Node picker'),
    'vendor url' => 'http://drupal.org/project/tinymce_node_picker',
    'icon file' => 'nodepicker.png',
    'icon title' => t('Insert link to internal content'),
    'settings' => array(
    	'dialog' => array(
    		'title' => t('Test'),
				'url' => url('admin/tinymce-node-picker'),
				'width' => 640,
				'height' => 480,
			),
    ),
  );
  return $plugins;
}
?>

You should use url( instead what was being used before!
Otherwise you don't get localized urls (which was a problem in my case) and probably all kind of other potential issues.