Javascript error: tinymce doesn't load the drupalasset button

Hi and thank you for sharing this modules ;-)

I'm trying to use for the first time. I followed the instructions described in the documentation. And i've got this error when trying to create content in the firebug console:

Drupal.assetWizard has no properties
cleanup("insert_to_editor", "")editor_plugin.js (line 87)
init(Object undoRedoLevel=true isTinyMCE_Control=true, "insert_to_editor", "")tiny_mce.js (line 1)
init("mce_editor_0")tiny_mce.js (line 1)
init(textarea#edit-body.form-textarea, "edit-body", undefined)tiny_mce.js (line 1)
init(textarea#edit-body.form-textarea, "edit-body", undefined)tiny_mce.js (line 1)
init()tiny_mce.js (line 1)
[Break on this error] var macros = Drupal.assetWizard.getMacros(content);

Thank you for your help.

Rafik

PS: sorry for my bad english. I'm not a native speaker.