You cannot access any of the "list links" on the /admin/structure/menu page when the "Content" (icl_content) component of the Translation Management module is enabled. After I disable this component, I can then access these pages again:

/admin/structure/menu/manage/management
/admin/structure/menu/manage/[menu_name]
etc.

Chromium reports:
HTTP Error 500 (Internal Server Error): An unexpected condition was encountered while the server was attempting to fulfil the request.

Drupal also reports this error which might be related:
Warning: Parameter 1 to icl_content_node_view() expected to be a reference, value given in module_invoke_all() (line 819 of /var/aegir/drupal-7.12/includes/module.inc).