Start up error / No plugin files being created

[MegaPixelPerfect]

Hello, I've put both the MassiveCore.jar and CreativeGates.jar in my plugins folder. However, when starting up the server with these, I receive an error message, none of the plugin files are created, and there is no trace of the plugin in game.

Here are the error messages: [10:28:49 INFO]: This server is running CraftBukkit version git-Bukkit-1.7.2-R0. 2-b2974jnks (MC: 1.7.2) (Implementing API version 1.7.2-R0.2) [10:28:49 ERROR]: Could not load 'plugins\MassiveCore.jar' in folder 'plugins' org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: net/mi necraft/server/v1_7_R4/PlayerInventory at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j ava:184) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager. java:308) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager .java:231) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] at org.bukkit.craftbukkit.v1_7_R1.CraftServer.loadPlugins(CraftServer.ja va:255) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] at org.bukkit.craftbukkit.v1_7_R1.CraftServer.(CraftServer.java:23 3) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] at net.minecraft.server.v1_7_R1.PlayerList.(PlayerList.java:63) [c raftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] at net.minecraft.server.v1_7_R1.DedicatedPlayerList.(SourceFile:14 ) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] at net.minecraft.server.v1_7_R1.DedicatedServer.init(DedicatedServer.jav a:126) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java :424) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:6 17) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] Caused by: java.lang.NoClassDefFoundError: net/minecraft/server/v1_7_R4/PlayerIn ventory at com.massivecraft.massivecore.MassiveCore.getMassiveCoreGsonBuilder(Ma ssiveCore.java:85) ~[?:?] at com.massivecraft.massivecore.MassiveCore.(MassiveCore.java:70 ) ~[?:?] at java.lang.Class.forName0(Native Method) ~[?:1.8.0_25] at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_25] at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j ava:173) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] ... 9 more Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_7_R4.Player Inventory at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader .java:70) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader. java:53) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_25] at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_25] at com.massivecraft.massivecore.MassiveCore.getMassiveCoreGsonBuilder(Ma ssiveCore.java:85) ~[?:?] at com.massivecraft.massivecore.MassiveCore.(MassiveCore.java:70 ) ~[?:?] at java.lang.Class.forName0(Native Method) ~[?:1.8.0_25] at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_25] at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j ava:173) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] ... 9 more [10:28:49 WARN]: Could not get information about this CraftBukkit version; perha ps you are running a custom one?: IOException [10:28:49 ERROR]: Could not load 'plugins\CreativeGates.jar' in folder 'plugins'

org.bukkit.plugin.UnknownDependencyException: MassiveCore at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager .java:196) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] at org.bukkit.craftbukkit.v1_7_R1.CraftServer.loadPlugins(CraftServer.ja va:255) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] at org.bukkit.craftbukkit.v1_7_R1.CraftServer.(CraftServer.java:23 3) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] at net.minecraft.server.v1_7_R1.PlayerList.(PlayerList.java:63) [c raftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] at net.minecraft.server.v1_7_R1.DedicatedPlayerList.(SourceFile:14 ) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] at net.minecraft.server.v1_7_R1.DedicatedServer.init(DedicatedServer.jav a:126) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java :424) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks] at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:6 17) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]

I apologize if I missed an easy step, or missed you answering the question. Hope I can get this fixed!

[MegaPixelPerfect]

UPDATE: I updated the craftbukkit.jar to 1.7.9 and the problem persisted.

[oloflarsson]

Caused by: java.lang.NoClassDefFoundError: net/minecraft/server/v1_7_R4/PlayerIn ventory

Means you are using a version of MassiveCore not compatible with the server version you are using.