Bukkit PSC error

[04:26:55] [Server thread/INFO]: Ancard issued server command: /psc leonellus Ancard
[04:26:57] [Protocol Worker #4 - PlayerSkinChanger - [recv: , send: PacketPlayOutNamedEntitySpawn[12, legacy: 20], PacketPlayOutEntityMetadata[28, legacy: 40], PacketPlayOutAttachEntity[27, legacy: 39], PacketPlayOutUpdateAttributes[32, legacy: 44], PacketPlayOutEntityEffect[29, legacy: 41], PacketPlayOutEntityEquipment[4, legacy: 5], PacketPlayOutBed[10, legacy: 17]]/ERROR]: [PlayerSkinChanger] Unhandled exception occured in onAsyncPacket() for PlayerSkinChanger
java.lang.NoSuchMethodError: com.comphenix.protocol.wrappers.WrappedSignedProperty.<init>(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V
	at fr.skyost.playerskinchanger.PlayerDisplayModifier.updateSkin(PlayerDisplayModifier.java:124) ~[PlayerSkinChanger.jar:?]
	at fr.skyost.playerskinchanger.PlayerDisplayModifier.access$4(PlayerDisplayModifier.java:112) ~[PlayerSkinChanger.jar:?]
	at fr.skyost.playerskinchanger.PlayerDisplayModifier$2.onPacketSending(PlayerDisplayModifier.java:88) ~[PlayerSkinChanger.jar:?]
	at com.comphenix.protocol.async.AsyncListenerHandler.processPacket(AsyncListenerHandler.java:601) [ProtocolLib-3.4.0-SNAPSHOT.jar:?]
	at com.comphenix.protocol.async.AsyncListenerHandler.listenerLoop(AsyncListenerHandler.java:557) [ProtocolLib-3.4.0-SNAPSHOT.jar:?]
	at com.comphenix.protocol.async.AsyncListenerHandler.access$100(AsyncListenerHandler.java:46) [ProtocolLib-3.4.0-SNAPSHOT.jar:?]
	at com.comphenix.protocol.async.AsyncListenerHandler$1.run(AsyncListenerHandler.java:192) [ProtocolLib-3.4.0-SNAPSHOT.jar:?]
	at com.comphenix.protocol.async.AsyncListenerHandler$2.run(AsyncListenerHandler.java:262) [ProtocolLib-3.4.0-SNAPSHOT.jar:?]
	at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftTask.run(CraftTask.java:53) [craftbukkit-1.7.9-R0.2.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
	at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53) [craftbukkit-1.7.9-R0.2.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.7.0_67]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.7.0_67]
	at java.lang.Thread.run(Unknown Source) [?:1.7.0_67]
[04:29:54] [Server thread/INFO]: Ancard issued server command: /psc ldtldtldt Ancard
[04:29:56] [Protocol Worker #3 - PlayerSkinChanger - [recv: , send: PacketPlayOutNamedEntitySpawn[12, legacy: 20], PacketPlayOutEntityMetadata[28, legacy: 40], PacketPlayOutAttachEntity[27, legacy: 39], PacketPlayOutUpdateAttributes[32, legacy: 44], PacketPlayOutEntityEffect[29, legacy: 41], PacketPlayOutEntityEquipment[4, legacy: 5], PacketPlayOutBed[10, legacy: 17]]/ERROR]: [PlayerSkinChanger] Unhandled exception occured in onAsyncPacket() for PlayerSkinChanger
java.lang.RuntimeException: Cannot fetch profile for ldtldtldt
	at fr.skyost.playerskinchanger.PlayerDisplayModifier.updateSkin(PlayerDisplayModifier.java:130) ~[PlayerSkinChanger.jar:?]
	at fr.skyost.playerskinchanger.PlayerDisplayModifier.access$4(PlayerDisplayModifier.java:112) ~[PlayerSkinChanger.jar:?]
	at fr.skyost.playerskinchanger.PlayerDisplayModifier$2.onPacketSending(PlayerDisplayModifier.java:88) ~[PlayerSkinChanger.jar:?]
	at com.comphenix.protocol.async.AsyncListenerHandler.processPacket(AsyncListenerHandler.java:601) [ProtocolLib-3.4.0-SNAPSHOT.jar:?]
	at com.comphenix.protocol.async.AsyncListenerHandler.listenerLoop(AsyncListenerHandler.java:557) [ProtocolLib-3.4.0-SNAPSHOT.jar:?]
	at com.comphenix.protocol.async.AsyncListenerHandler.access$100(AsyncListenerHandler.java:46) [ProtocolLib-3.4.0-SNAPSHOT.jar:?]
	at com.comphenix.protocol.async.AsyncListenerHandler$1.run(AsyncListenerHandler.java:192) [ProtocolLib-3.4.0-SNAPSHOT.jar:?]
	at com.comphenix.protocol.async.AsyncListenerHandler$2.run(AsyncListenerHandler.java:262) [ProtocolLib-3.4.0-SNAPSHOT.jar:?]
	at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftTask.run(CraftTask.java:53) [craftbukkit-1.7.9-R0.2.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
	at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53) [craftbukkit-1.7.9-R0.2.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.7.0_67]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.7.0_67]
	at java.lang.Thread.run(Unknown Source) [?:1.7.0_67]
Caused by: org.json.simple.parser.ParseException
	at org.json.simple.parser.JSONParser.parse(Unknown Source) ~[craftbukkit-1.7.9-R0.2.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
	at org.json.simple.parser.JSONParser.parse(Unknown Source) ~[craftbukkit-1.7.9-R0.2.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
	at org.json.simple.parser.JSONParser.parse(Unknown Source) ~[craftbukkit-1.7.9-R0.2.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]
	at fr.skyost.playerskinchanger.PlayerDisplayModifier.updateSkin(PlayerDisplayModifier.java:114) ~[PlayerSkinChanger.jar:?]
	... 12 more
[04:30:32] [Server thread/INFO]: CONSOLE: Stopping the server..