2012-02-09 16:49:48 [INFO] LogBlock v1.51 by DiddiZ enabled.
2012-02-09 16:49:48 [INFO] WEPIF: PermissionsEx detected! Using PermissionsEx for permissions.
2012-02-09 16:49:48 [INFO] WEPIF: PermissionsEx detected! Using PermissionsEx for permissions.
2012-02-09 16:49:48 [INFO] WorldGuard: (elitecraftRELOADED) Single session is enforced.
2012-02-09 16:49:48 [INFO] WorldGuard: (elitecraftRELOADED) TNT ignition is blocked.
2012-02-09 16:49:48 [INFO] WorldGuard: (elitecraftRELOADED) Lighters are PERMITTED.
2012-02-09 16:49:48 [INFO] WorldGuard: (elitecraftRELOADED) Lava fire is blocked.
2012-02-09 16:49:48 [INFO] WorldGuard: (elitecraftRELOADED) All fire spread is disabled.
2012-02-09 16:49:48 [INFO] WorldGuard: Loaded configuration for world 'elitecraftRELOADED"
2012-02-09 16:49:48 [INFO] WorldGuard: (elitecraftRELOADED_nether) Single session is enforced.
2012-02-09 16:49:48 [INFO] WorldGuard: (elitecraftRELOADED_nether) TNT ignition is blocked.
2012-02-09 16:49:48 [INFO] WorldGuard: (elitecraftRELOADED_nether) Lighters are PERMITTED.
2012-02-09 16:49:48 [INFO] WorldGuard: (elitecraftRELOADED_nether) Lava fire is blocked.
2012-02-09 16:49:48 [INFO] WorldGuard: (elitecraftRELOADED_nether) All fire spread is disabled.
2012-02-09 16:49:48 [INFO] WorldGuard: Loaded configuration for world 'elitecraftRELOADED_nether"
2012-02-09 16:49:48 [INFO] WorldGuard: (elitecraftRELOADED_the_end) Single session is enforced.
2012-02-09 16:49:48 [INFO] WorldGuard: (elitecraftRELOADED_the_end) TNT ignition is blocked.
2012-02-09 16:49:48 [INFO] WorldGuard: (elitecraftRELOADED_the_end) Lighters are PERMITTED.
2012-02-09 16:49:48 [INFO] WorldGuard: (elitecraftRELOADED_the_end) Lava fire is blocked.
2012-02-09 16:49:48 [INFO] WorldGuard: (elitecraftRELOADED_the_end) All fire spread is disabled.
2012-02-09 16:49:48 [INFO] WorldGuard: Loaded configuration for world 'elitecraftRELOADED_the_end"
2012-02-09 16:49:48 [INFO] WorldGuard: 1 regions loaded for 'elitecraftRELOADED'
2012-02-09 16:49:48 [INFO] WorldGuard: 0 regions loaded for 'elitecraftRELOADED_nether'
2012-02-09 16:49:48 [INFO] WorldGuard: 0 regions loaded for 'elitecraftRELOADED_the_end'
2012-02-09 16:49:48 [INFO] LWC: Latest version: 4.0.7
2012-02-09 16:49:48 [INFO] WorldGuard 5.4 enabled.
2012-02-09 16:49:48 [INFO] WorldEdit 5.1.1 enabled.
2012-02-09 16:49:48 [INFO] WEPIF: PermissionsEx detected! Using PermissionsEx for permissions.
2012-02-09 16:49:48 [INFO] [SimpleClans] Version 2.0.7 loaded
2012-02-09 16:49:48 [INFO] [SimpleClans] MySQL Connection successful
2012-02-09 16:49:48 [SEVERE] Error occurred while enabling SimpleClans v2.0.7 (Is it up to date?): org.bukkit.plugin.PluginManager.registerEvents(Lorg/bukkit/event/Listener;Lorg/bukkit/plugin/Plugin;)V
java.lang.NoSuchMethodError: org.bukkit.plugin.PluginManager.registerEvents(Lorg/bukkit/event/Listener;Lorg/bukkit/plugin/Plugin;)V
at net.sacredlabyrinth.phaed.simpleclans.SimpleClans.onEnable(SimpleClans.java:93)
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:230)
at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:970)
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:280)
at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:187)
at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:170)
at org.bukkit.craftbukkit.CraftServer.reload(CraftServer.java:437)
at org.bukkit.Bukkit.reload(Bukkit.java:187)
at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:22)
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:168)
at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:379)
at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:375)
at net.minecraft.server.MinecraftServer.b(MinecraftServer.java:571)
at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:548)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:432)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:465)

Funny, it should say (Is your server up to date?).

Download an older version of SimpleClans that matches the version of CraftBukkit you are using, or upgrade to CB1.1-R3.

Wooo thx