[13:30:17] [Server thread/INFO]: Starting minecraft server version 1.7.10
[13:30:17] [Server thread/INFO]: Loading properties
[13:30:17] [Server thread/INFO]: Default game type: SURVIVAL
[13:30:17] [Server thread/INFO]: This server is running CraftBukkit version git-Spigot-1564 (MC: 1.7.10) (Implementing API version 1.7.10-R0.1-SNAPSHOT)
[13:30:17] [Server thread/INFO]: Using 4 threads for Netty based IO
[13:30:17] [Server thread/INFO]: Server Ping Player Sample Count: 12
[13:30:17] [Server thread/INFO]: Generating keypair
[[13:30:17] [Server thread/INFO]: Starting Minecraft server on s1.mc-cs.pl
13:30:18] [Server thread/INFO]: Set PluginClassLoader as parallel capable
[13:30:18] [Server thread/ERROR]: Could not load 'plugins/mcore.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: net/minecraft/server/v1_7_R3/PlayerInventory
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:133) ~[craftbukkit.jar:git-Spigot-1564]
	at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:329) ~[craftbukkit.jar:git-Spigot-1564]
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [craftbukkit.jar:git-Spigot-1564]
	at org.bukkit.craftbukkit.v1_7_R4.CraftServer.loadPlugins(CraftServer.java:369) [craftbukkit.jar:git-Spigot-1564]
	at net.minecraft.server.v1_7_R4.DedicatedServer.init(DedicatedServer.java:152) [craftbukkit.jar:git-Spigot-1564]
	at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:458) [craftbukkit.jar:git-Spigot-1564]
	at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [craftbukkit.jar:git-Spigot-1564]
Caused by: java.lang.NoClassDefFoundError: net/minecraft/server/v1_7_R3/PlayerInventory
	at com.massivecraft.mcore.MCore.getMCoreGsonBuilder(MCore.java:84) ~[?:?]
	at com.massivecraft.mcore.MCore.<clinit>(MCore.java:69) ~[?:?]
	at java.lang.Class.forName0(Native Method) ~[?:1.7.0_25]
	at java.lang.Class.forName(Class.java:270) ~[?:1.7.0_25]
	at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:61) ~[craftbukkit.jar:git-Spigot-1564]
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[craftbukkit.jar:git-Spigot-1564]
	... 6 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_7_R3.PlayerInventory
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:88) ~[craftbukkit.jar:git-Spigot-1564]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:83) ~[craftbukkit.jar:git-Spigot-1564]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.7.0_25]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.7.0_25]
	at com.massivecraft.mcore.MCore.getMCoreGsonBuilder(MCore.java:84) ~[?:?]
	at com.massivecraft.mcore.MCore.<clinit>(MCore.java:69) ~[?:?]
	at java.lang.Class.forName0(Native Method) ~[?:1.7.0_25]
	at java.lang.Class.forName(Class.java:270) ~[?:1.7.0_25]
	at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:61) ~[craftbukkit.jar:git-Spigot-1564]
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[craftbukkit.jar:git-Spigot-1564]
	... 6 more
[13:30:18] [Server thread/ERROR]: Could not load 'plugins/CreativeGates.jar' in folder 'plugins'
org.bukkit.plugin.UnknownDependencyException: mcore
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:216) [craftbukkit.jar:git-Spigot-1564]
	at org.bukkit.craftbukkit.v1_7_R4.CraftServer.loadPlugins(CraftServer.java:369) [craftbukkit.jar:git-Spigot-1564]
	at net.minecraft.server.v1_7_R4.DedicatedServer.init(DedicatedServer.java:152) [craftbukkit.jar:git-Spigot-1564]
	at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:458) [craftbukkit.jar:git-Spigot-1564]
	at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [craftbukkit.jar:git-Spigot-1564]