wordpress_import

http://drup.toscalahiri.com/admin/content/wordpress_import

get this error:
PDOException: SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'name' cannot be null: INSERT INTO {ctools_object_cache} (sid, obj, name, data, updated) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4); Array ( [:db_insert_placeholder_0] => ksLDJPzMcUodygqFeJBUMPM2AzvBu2lu3r1vmuz0SEU [:db_insert_placeholder_1] => wordpress_import [:db_insert_placeholder_2] => [:db_insert_placeholder_3] => O:8:"stdClass":0:{} [:db_insert_placeholder_4] => 1345409782 ) in ctools_object_cache_set() (line 90 of /home1/toscalah/public_html/drup/sites/all/modules/ctools/includes/object-cache.inc).

what is wrong please? thanks