[19:18:05] [Server thread/ERROR]: Could not pass event BlockRedstoneEvent to Lift v44
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427) ~[craftbukkit.jar:git-Spigot-1178]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[craftbukkit.jar:git-Spigot-1178]
	at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:30) ~[craftbukkit.jar:git-Spigot-1178]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:478) [craftbukkit.jar:git-Spigot-1178]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:463) [craftbukkit.jar:git-Spigot-1178]
	at net.minecraft.server.v1_7_R1.BlockButtonAbstract.interact(BlockButtonAbstract.java:153) [craftbukkit.jar:git-Spigot-1178]
	at net.minecraft.server.v1_7_R1.PlayerInteractManager.interact(PlayerInteractManager.java:384) [craftbukkit.jar:git-Spigot-1178]
	at net.minecraft.server.v1_7_R1.PlayerConnection.a(PlayerConnection.java:627) [craftbukkit.jar:git-Spigot-1178]
	at net.minecraft.server.v1_7_R1.PacketPlayInBlockPlace.a(SourceFile:60) [craftbukkit.jar:git-Spigot-1178]
	at net.minecraft.server.v1_7_R1.PacketPlayInBlockPlace.handle(SourceFile:9) [craftbukkit.jar:git-Spigot-1178]
	at net.minecraft.server.v1_7_R1.NetworkManager.a(NetworkManager.java:146) [craftbukkit.jar:git-Spigot-1178]
	at net.minecraft.server.v1_7_R1.ServerConnection.c(SourceFile:134) [craftbukkit.jar:git-Spigot-1178]
	at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java:647) [craftbukkit.jar:git-Spigot-1178]
	at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:259) [craftbukkit.jar:git-Spigot-1178]
	at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:530) [craftbukkit.jar:git-Spigot-1178]
	at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:442) [craftbukkit.jar:git-Spigot-1178]
	at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [craftbukkit.jar:git-Spigot-1178]
Caused by: java.lang.NoClassDefFoundError: net/h31ix/anticheat/manage/CheckType
	at net.croxis.plugins.lift.BukkitElevatorManager.setupPlayer(BukkitElevatorManager.java:366) ~[?:?]
	at net.croxis.plugins.lift.BukkitElevatorManager.addPassenger(BukkitElevatorManager.java:471) ~[?:?]
	at net.croxis.plugins.lift.BukkitLiftRedstoneListener.onBlockRedstoneChange(BukkitLiftRedstoneListener.java:168) ~[?:?]
	at sun.reflect.GeneratedMethodAccessor401.invoke(Unknown Source) ~[?:?]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_40]
	at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_40]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425) ~[craftbukkit.jar:git-Spigot-1178]
	... 16 more