Stats error 2

2013-01-12 04:51:57 [SEVERE] [Stats] Stats_[MySQL] jdbc:mysql://mysql.envioushost.com:3306/mcus_857
2013-01-12 04:51:57 [SEVERE] [Stats] Stats_[MySQL] SQL exception in open(): Data source rejected establishment of connection,  message from server: "Too many connections".
2013-01-12 04:51:57 [SEVERE] Exception in thread "pool-1-thread-262"
2013-01-12 04:51:57 [SEVERE] org.apache.commons.lang.UnhandledException: Plugin Stats vjenkins-Stats-129 generated an exception while executing task 19
	at org.bukkit.craftbukkit.v1_4_6.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
	at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.NullPointerException
	at nl.lolmewn.stats.Main.executeStatement(Main.java:232)
	at nl.lolmewn.stats.Main.runMoveTableUpdate(Main.java:413)
	at nl.lolmewn.stats.Main.runTableUpdates(Main.java:391)
	at nl.lolmewn.stats.Main.access$100(Main.java:30)
	at nl.lolmewn.stats.Main$2.run(Main.java:93)
	at org.bukkit.craftbukkit.v1_4_6.scheduler.CraftTask.run(CraftTask.java:53)
	at org.bukkit.craftbukkit.v1_4_6.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)
	... 3 more