Bukkit

@ItsVinc I believe your problem is, as it says near the beginning of your error, is that the plugin and your server's version are not compatible. What version are you currently running?

hi i have an ERROR

[22:04:34 ERROR]: Could not load 'plugins/NoHunger_1.7.4_v1.jar' in folder 'plugins' org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: org/mle/NoHungerMain : Unsupported major.minor version 51.0 at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:137) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:313) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:236) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.bukkit.craftbukkit.v1_7_R1.CraftServer.loadPlugins(CraftServer.java:350) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.bukkit.craftbukkit.v1_7_R1.CraftServer.<init>(CraftServer.java:312) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at net.minecraft.server.v1_7_R1.PlayerList.<init>(PlayerList.java:63) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at net.minecraft.server.v1_7_R1.DedicatedPlayerList.<init>(SourceFile:14) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at net.minecraft.server.v1_7_R1.DedicatedServer.init(DedicatedServer.java:126) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:424) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] Caused by: java.lang.UnsupportedClassVersionError: org/mle/NoHungerMain : Unsupported major.minor version 51.0 at java.lang.ClassLoader.defineClass1(Native Method) [?:1.6.0_65] at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637) [?:1.6.0_65] at java.lang.ClassLoader.defineClass(ClassLoader.java:621) [?:1.6.0_65] at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) [?:1.6.0_65] at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) [?:1.6.0_65] at java.net.URLClassLoader.access$000(URLClassLoader.java:58) [?:1.6.0_65] at java.net.URLClassLoader$1.run(URLClassLoader.java:197) [?:1.6.0_65] at java.security.AccessController.doPrivileged(Native Method) [?:1.6.0_65] at java.net.URLClassLoader.findClass(URLClassLoader.java:190) [?:1.6.0_65] at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:77) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at java.lang.ClassLoader.loadClass(ClassLoader.java:306) [?:1.6.0_65] at java.lang.ClassLoader.loadClass(ClassLoader.java:247) [?:1.6.0_65] at java.lang.Class.forName0(Native Method) [?:1.6.0_65] at java.lang.Class.forName(Class.java:249) [?:1.6.0_65] at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:40) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:133) [minecraft_server.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] ... 9 more