Проблема с WorldEdit

[SunRise]

У меня подлагивает сервер, и я искал решение этой проблемы, ну мол плагины и всё такое. И в консоли заметил это "
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.
2014-04-23 13:55:38 [WARNING] [WorldEdit] No compatible nms block class found.

Это как бы нормально? Он за секунду делает таких сообщений по штук 20.
Как это можно исправить? Ну там перезагрузить плагин или переустановить.
Или быть может причина в каком то игроке?