tree-based move manager (?do=admin&page=move_tree) is a blank page

[sergeLabo]

Rename a page works fine, new internal link are good. Move a page to another namespace works, but the media files don't move. The tree-based move manager is blank without error.

We have around 400 pages and 2000 media files in root directories, and we want to rearrange in subdirectories.

Any ideas ?

[sergeLabo]

We change the template to the default template and it work's fine !