Bukkit

OKB3 stops working after a while.

errors:
[OKB3] OKB[MySQL] Error in SQL query: No operations allowed after connection closed.Connection was implicitly closed by the driver.
[INFO] artia[/93.96.196.217:52561] logged in with entity id 3607923 at ([WorldTwo] 47.389620347476885, 63.10408037809304, -59.42917712409848)
2012-08-23 07:58:44 [INFO] artia joined the game!
2012-08-23 07:58:44 [WARNING] [OKB3] OKB[MySQL] Error in SQL prepare() query: No operations allowed after connection closed.Connection was implicitly closed by the driver.
2012-08-23 07:58:44 [SEVERE] java.lang.NullPointerException
2012-08-23 07:58:44 [SEVERE]     at XenForo.getGroup(XenForo.java:89)
2012-08-23 07:58:44 [SEVERE]     at com.greatmancode.okb3.OKFunctions.syncPlayer(OKFunctions.java:83)
2012-08-23 07:58:44 [SEVERE]     at com.greatmancode.okb3.OKRunnable.run(OKRunnable.java:70)
2012-08-23 07:58:44 [SEVERE]     at org.bukkit.craftbukkit.scheduler.CraftWorker.run(CraftWorker.java:34)
2012-08-23 07:58:44 [SEVERE]     at java.lang.Thread.run(Unknown Source)

I think this happens when people joins:

th entity id 4777876 at ([stratacraft] 123.85694255657731, 65.0, 66.49402024232164) 2012-08-28 11:02:31 [INFO] coolguy115 joined the game! 2012-08-28 11:02:31 [WARNING] [OKB3] OKB[MySQL] Error in SQL prepare() query: No operations allowed after connection closed.Connection was implicitly closed by the driver. 2012-08-28 11:02:31 [SEVERE] Exception in thread "pool-1-thread-396" 2012-08-28 11:02:31 [SEVERE] org.apache.commons.lang.UnhandledException: Plugin OKB3 v3.7.1 generated an exception while executing task 49959 at org.bukkit.craftbukkit.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: java.lang.NullPointerException at XenForo.getGroup(XenForo.java:89) at com.greatmancode.okb3.OKFunctions.syncPlayer(OKFunctions.java:83) at com.greatmancode.okb3.OKRunnable.run(OKRunnable.java:70) at org.bukkit.craftbukkit.scheduler.CraftTask.run(CraftTask.java:52) at org.bukkit.craftbukkit.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53) ... 3 more

2012-08-28 11:02:48 [INFO] zpartan2307[/92.21.86.91:51893] logged in with entity id 4778298 at ([world] -390.5, 84.62000000476837, 857.5) 2012-08-28 11:02:48 [INFO] zpartan2307 joined the game! 2012-08-28 11:02:48 [WARNING] [OKB3] OKB[MySQL] Error in SQL prepare() query: No operations allowed after connection closed.Connection was implicitly closed by the driver. 2012-08-28 11:02:48 [SEVERE] Exception in thread "pool-1-thread-392" 2012-08-28 11:02:48 [SEVERE] org.apache.commons.lang.UnhandledException: Plugin OKB3 v3.7.1 generated an exception while executing task 50001 at org.bukkit.craftbukkit.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: java.lang.NullPointerException at XenForo.getGroup(XenForo.java:89) at com.greatmancode.okb3.OKFunctions.syncPlayer(OKFunctions.java:83) at com.greatmancode.okb3.OKRunnable.run(OKRunnable.java:70) at org.bukkit.craftbukkit.scheduler.CraftTask.run(CraftTask.java:52) at org.bukkit.craftbukkit.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53) ... 3 more

2012-08-28 11:02:48 [INFO] [WorldInventories] Player zpartan2307 moved from world world to spawn 2012-08-28 11:02:49 [INFO] [WorldInventories] Player zpartan2307 moved from world spawn to stratacraft 2012-08-28 11:02:50 [WARNING] [OKB3] OKB[MySQL] Error in SQL prepare() query: No operations allowed after connection closed.Connection was implicitly closed by the driver. 2012-08-28 11:02:50 [SEVERE] Exception in thread "pool-1-thread-398" 2012-08-28 11:02:50 [SEVERE] org.apache.commons.lang.UnhandledException: Plugin OKB3 v3.7.1 generated an exception while executing task 50002 at org.bukkit.craftbukkit.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: java.lang.NullPointerException at XenForo.getGroup(XenForo.java:89) at com.greatmancode.okb3.OKFunctions.syncPlayer(OKFunctions.java:83) at com.greatmancode.okb3.OKRunnable.run(OKRunnable.java:97) at org.bukkit.craftbukkit.scheduler.CraftTask.run(CraftTask.java:52) at org.bukkit.craftbukkit.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53) ... 3 more

This is quite odd because I have not experienced this issue and I am running xenforo. I of course run it all on the same dedicated, so perhaps that could be your issue.