Hello, today I discovered a big problem with my Minecarts. This happens when I place a cart on a track: Code: ld.playerJoinedWorld(World.java:1240) 2012-02-02 16:40:46 [SEVERE] at net.minecraft.server.World.tickEntities(World.java:1147) 2012-02-02 16:40:46 [SEVERE] at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:528) 2012-02-02 16:40:46 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:435) 2012-02-02 16:40:46 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:465) 2012-02-02 16:40:46 [SEVERE] Unexpected exception java.lang.NoSuchFieldError: bN at com.bergerkiller.bukkit.tc.NativeMinecartMember.move(NativeMinecartMember.java:690) at net.minecraft.server.EntityMinecart.y_(EntityMinecart.java:396) at net.minecraft.server.World.entityJoinedWorld(World.java:1258) at net.minecraft.server.WorldServer.entityJoinedWorld(WorldServer.java:110) at net.minecraft.server.World.playerJoinedWorld(World.java:1240) at net.minecraft.server.World.tickEntities(World.java:1147) at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:528) at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:435) at net.minecraft.server.ThreadServerApplication.run(SourceFile:465) After this I get disconected and no one can join until i restart the Server. What I already tried: - New World with a Minecart test track - Deactivate all Minecart Mania Plugins I hope you can help me, thanks.