Помогите Не устанавливается плагин creativegates

Не могу установить плагин creativegates на сервер craftbukkit 1.5.2.
Пробовал устанавливать как и на чистом сервере, так и со сторонними плагинами.
В консоли выдает это (сервер только с плагином creativegates)
27.08 12:06:45 [Server] Startup Done (0.858s)! For help, type "help" or "?"
27.08 12:06:45 [Server] INFO Server permissions file permissions.yml is empty, ignoring it
27.08 12:06:45 [Server] INFO Preparing start region for level 2 (Seed: -6870338041346111978)
27.08 12:06:45 [Multicraft] Skipped 10 lines due to rate limit (30/s)
27.08 12:06:44 [Server] INFO at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader.java:80)
27.08 12:06:44 [Server] INFO at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
27.08 12:06:44 [Server] INFO at java.security.AccessController.doPrivileged(Native Method)
27.08 12:06:44 [Server] INFO at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
27.08 12:06:44 [Server] INFO at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
27.08 12:06:44 [Server] INFO at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
27.08 12:06:44 [Server] INFO at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
27.08 12:06:44 [Server] INFO at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
27.08 12:06:44 [Server] INFO at java.lang.ClassLoader.defineClass1(Native Method)
27.08 12:06:44 [Server] INFO Caused by: java.lang.UnsupportedClassVersionError: com/massivecraft/creativegates/CreativeGates : Unsupported major.minor version 51.0
27.08 12:06:44 [Server] INFO at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573)
27.08 12:06:44 [Server] INFO at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:382)
27.08 12:06:44 [Server] INFO at net.minecraft.server.v1_5_R3.DedicatedServer.init(DedicatedServer.java:106)
27.08 12:06:44 [Server] INFO at net.minecraft.server.v1_5_R3.DedicatedPlayerList.<init>(SourceFile:11)
27.08 12:06:44 [Server] INFO at net.minecraft.server.v1_5_R3.PlayerList.<init>(PlayerList.java:55)
27.08 12:06:44 [Server] INFO at org.bukkit.craftbukkit.v1_5_R3.CraftServer.<init>(CraftServer.java:217)
27.08 12:06:44 [Server] INFO at org.bukkit.craftbukkit.v1_5_R3.CraftServer.loadPlugins(CraftServer.java:239)
27.08 12:06:44 [Server] INFO at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:230)
27.08 12:06:44 [Server] INFO at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:305)
27.08 12:06:44 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:184)
27.08 12:06:44 [Server] INFO org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: com/massivecraft/creativegates/CreativeGates : Unsupported major.minor version 51.0
27.08 12:06:44 [Server] SEVERE Could not load 'plugins/CreativeGates.jar' in folder 'plugins'
27.08 12:06:44 [Server] INFO This server is running CraftBukkit version git-Bukkit-1.5.2-R1.0-b2788jnks (MC: 1.5.2) (Implementing API version 1.5.2-R1.0)
27.08 12:06:44 [Server] INFO Starting Minecraft server on 94.23.209.20:25565
27.08 12:06:44 [Server] INFO Generating keypair
27.08 12:06:44 [Server] INFO Default game type: SURVIVAL
27.08 12:06:44 [Server] INFO Loading properties
27.08 12:06:44 [Server] INFO Starting minecraft server version 1.5.2
27.08 12:06:44 [Server] INFO 27 achievements
27.08 12:06:44 [Server] INFO 229 recipes
27.08 12:06:43 [Multicraft] Loaded config for "Mod: Craftbukkit"
27.08 12:06:43 [Multicraft] Starting server!

 

Установил protocollib. Результата нет. Папка creativegates не создаётся. Все остальные плагины устанавливаются, как и раньше.

 

Зайди на страницу с плагином там с каких то времен требуется mcore библиотека