Using 'jstools 5.x-0.8' and fckeditor 5.x-2.1 (http://drupal.org/project/fckeditor) and FCKeditor 2.6 RC (http://www.fckeditor.

Using 'jstools 5.x-0.8' and fckeditor 5.x-2.1 (http://drupal.org/project/fckeditor) and FCKeditor 2.6 RC (http://www.fckeditor.net/download)

If you are using the Drupal module 'jstools 5.x-0.8' ,specifically the collapseablock component, and the collapseablock is not showing up when editing in fckeditor,
and you get an error "undefined XML name @false" than you need to exclude "/modules/fckeditor/fckeditor.utils.js" from js aggregation