error LWC bukkit

25.07 23:07:16 [Server] INFO Connection timed out
25.07 23:05:23 [Server] INFO ... 3 more
25.07 23:05:23 [Server] INFO at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)
25.07 23:05:23 [Server] INFO at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftTask.run(CraftTask.java:53)
25.07 23:05:23 [Server] INFO at com.griefcraft.util.Updater$1.run(Updater.java:81)
25.07 23:05:23 [Server] INFO Caused by: java.lang.NullPointerException
25.07 23:05:23 [Server] INFO at java.lang.Thread.run(Thread.java:745)
25.07 23:05:23 [Server] INFO at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
25.07 23:05:23 [Server] INFO at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
25.07 23:05:23 [Server] INFO at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56)
25.07 23:05:23 [Server] WARN org.apache.commons.lang.UnhandledException: Plugin LWC v4.4.0 (b881) (July 11, 2013) generated an exception while executing task 13
25.07 23:05:23 [Server] WARN Exception in thread "pool-3-thread-11"
25.07 23:05:23 [Server] INFO [LWC] This can probably be ignored.
25.07 23:05:23 [Server] INFO [LWC] The updater ran into a minor issue: Server returned HTTP response code: 522 for URL: http://update.griefcraft.com/lwc/branch/stable/LATEST