Bukkit

Hello!

I have too many errors in console (for 5 min log size > 20mb). server - kCauldron 1.7.10

3x errors on http://pastebin.com/afcPcdUh

[Server thread/ERROR] [Minecraft/]: Could not pass event BlockPhysicsEvent to CreeperHeal v6.7.9 org.bukkit.event.EventException ... ... ... Caused by: java.lang.ClassCastException: org.bukkit.craftbukkit.v1_7_R4.inventory.CraftInventory cannot be cast to org.bukkit.inventory.DoubleChestInventory at com.nitnelave.CreeperHeal.block.CreeperChest.<init>(CreeperChest.java:49) [?:?] at com.nitnelave.CreeperHeal.block.CreeperBlock.newBlock(CreeperBlock.java:70) [?:?] at com.nitnelave.CreeperHeal.listeners.RailsUpdateListener.onBlockPhysics(RailsUpdateListener.java:30) [?:?] at sun.reflect.GeneratedMethodAccessor80.invoke(Unknown Source) [?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [?:1.8.0_101] at java.lang.reflect.Method.invoke(Method.java:498) [?:1.8.0_101] at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:334) [JavaPluginLoader$1.class:1.7.10-R0.1-SNAPSHOT]

How can i fix it? I search many forums for this error, but can't see any fix for this. Thanks!