Plugin CreativeGates

Install the plugin on the server is not working. That log

Code:

>20:16:12 [INFO] [CreativeGates] Enabling CreativeGates v1.4
>
20:16:12 [INFO] [CreativeGates v1.4] === ENABLE START ===
>
20:16:12 [SEVERE] Error occurred while enabling CreativeGates v1.4 (Is it up to date?)
java.lang.NoClassDefFoundError: com/google/gson/GsonBuilder
        at com.massivecraft.creativegates.zcore.MPlugin.getGsonBuilder(MPlugin.java:133)
        at com.massivecraft.creativegates.zcore.MPlugin.preEnable(MPlugin.java:69)
        at com.massivecraft.creativegates.CreativeGates.onEnable(CreativeGates.java:20)
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457)
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:381)
        at org.bukkit.craftbukkit.v1_5_R3.CraftServer.loadPlugin(CraftServer.java:282)
        at org.bukkit.craftbukkit.v1_5_R3.CraftServer.enablePlugins(CraftServer.java:264)
        at net.minecraft.server.v1_5_R3.MinecraftServer.j(MinecraftServer.java:304)
        at net.minecraft.server.v1_5_R3.MinecraftServer.e(MinecraftServer.java:283)
        at net.minecraft.server.v1_5_R3.MinecraftServer.a(MinecraftServer.java:243)
        at net.minecraft.server.v1_5_R3.DedicatedServer.init(DedicatedServer.java:151)
        at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:382)
        at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573)
Caused by: java.lang.ClassNotFoundException: com.google.gson.GsonBuilder
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader.java:80)
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:53)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        ... 14 more

 

Download and to v1.5.2. Still not working

 

Now I try

It does not work, unfortunately.

 

What server version are you using?

 

@timtower Does that mean Spigot/Craftbukkit 1.5?