[16:43:45] [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:131) ~[Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:328) ~[Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at org.bukkit.craftbukkit.v1_7_R2.CraftServer.loadPlugins(CraftServer.java:350) [Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at org.bukkit.craftbukkit.v1_7_R2.CraftServer.<init>(CraftServer.java:312) [Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at net.minecraft.server.v1_7_R2.PlayerList.<init>(PlayerList.java:63) [Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at net.minecraft.server.v1_7_R2.DedicatedPlayerList.<init>(SourceFile:14) [Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at net.minecraft.server.v1_7_R2.DedicatedServer.init(DedicatedServer.java:126) [Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at net.minecraft.server.v1_7_R2.MinecraftServer.run(MinecraftServer.java:426) [Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at net.minecraft.server.v1_7_R2.ThreadServerApplication.run(SourceFile:618) [Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
Caused by: java.lang.NoClassDefFoundError: net/minecraft/server/v1_7_R3/PlayerInventory
	at com.massivecraft.mcore.MCore.getMCoreGsonBuilder(MCore.java:82) ~[?:?]
	at com.massivecraft.mcore.MCore.<clinit>(MCore.java:67) ~[?:?]
	at java.lang.Class.forName0(Native Method) ~[?:1.7.0_55]
	at java.lang.Class.forName(Unknown Source) ~[?:1.7.0_55]
	at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:40) ~[Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	... 9 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_7_R3.PlayerInventory
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:67) ~[Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) ~[Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_55]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_55]
	at com.massivecraft.mcore.MCore.getMCoreGsonBuilder(MCore.java:82) ~[?:?]
	at com.massivecraft.mcore.MCore.<clinit>(MCore.java:67) ~[?:?]
	at java.lang.Class.forName0(Native Method) ~[?:1.7.0_55]
	at java.lang.Class.forName(Unknown Source) ~[?:1.7.0_55]
	at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:40) ~[Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	... 9 more
[16:43:45] [Thread-7/INFO]: ----- Bukkit Auto Updater -----
[16:43:45] [Thread-7/INFO]: It appears that you're running a Development Build, when you've specified in bukkit.yml that you prefer to run Recommended Builds.
[16:43:45] [Thread-7/INFO]: If you would like to be kept informed about new Development Build releases, it is recommended that you change 'preferred-channel' in your bukkit.yml to 'dev'.
[16:43:45] [Thread-7/INFO]: With that set, you will be told whenever a new version is available for download, so that you can always keep up to date and secure with the latest fixes.
[16:43:45] [Thread-7/INFO]: If you would like to disable this warning, simply set 'suggest-channels' to false in bukkit.yml.
[16:43:45] [Thread-7/INFO]: ----- ------------------- -----
[16:43:45] [Server thread/ERROR]: Could not load 'plugins/Factions.jar' in folder 'plugins'
org.bukkit.plugin.UnknownDependencyException: mcore
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:216) [Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at org.bukkit.craftbukkit.v1_7_R2.CraftServer.loadPlugins(CraftServer.java:350) [Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at org.bukkit.craftbukkit.v1_7_R2.CraftServer.<init>(CraftServer.java:312) [Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at net.minecraft.server.v1_7_R2.PlayerList.<init>(PlayerList.java:63) [Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at net.minecraft.server.v1_7_R2.DedicatedPlayerList.<init>(SourceFile:14) [Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at net.minecraft.server.v1_7_R2.DedicatedServer.init(DedicatedServer.java:126) [Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at net.minecraft.server.v1_7_R2.MinecraftServer.run(MinecraftServer.java:426) [Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]
	at net.minecraft.server.v1_7_R2.ThreadServerApplication.run(SourceFile:618) [Bukkit_Dev.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks]