Button "Add media" appears but disabled

Hello,

When I click on the button "add media" on the user interface of CK Editor, nothing happens (the library doesn't open). I've thicked the plugin for inserting images from Drupal media module via the Configuration of Ck Editor.

I've installed:

CKEditor (ckeditor)
Enables CKEditor (WYSIWYG HTML editor) for use instead of plain text fields.
Version: 7.x-1.16
Required by: CKEditor Widgets (disabled), Media CKEditor (enabled)
Operations
Permissions

CKEditor Insert (ckeditor_insert)
CKEditor button to insert files using Insert module
Version: 7.x-1.0-rc1
Requires: Insert (enabled)

Media CKEditor (media_ckeditor)
Provides a bridge between Media and the stand-alone CKEditor module.
Version: 7.x-1.0-alpha2
Requires: CKEditor (enabled), Media (enabled), File entity (enabled), Field (enabled), Field SQL storage (enabled), Chaos tools (enabled), Image (enabled), File (enabled)

File entity (file_entity)
Extends Drupal file entities to be fieldable and viewable.
Version: 7.x-1.5
Requires: Field (enabled), Field SQL storage (enabled), Chaos tools (enabled)
Required by: Media (enabled), Media CKEditor (enabled), Media Internet Sources (enabled)
Configure

Media (media)
Provides the core Media API
Version: 7.x-1.5
Requires: File entity (enabled), Field (enabled), Field SQL storage (enabled), Chaos tools (enabled), Image (enabled), File (enabled)

Could someone help me, please ?