Error occurred while enabling Umbaska v1.5.2_JAVA7 (Is it up to date?)
java.lang.IllegalArgumentException: Can't register java.util.Date with the code name date because that name is already used by date
	at ch.njol.skript.registrations.Classes.registerClass(Classes.java:88) ~[?:?]
	at uk.co.umbaska.Utils.EnumClassInfo.register(EnumClassInfo.java:56) ~[?:?]
	at uk.co.umbaska.Managers.Enums.registerEnum(Enums.java:49) ~[?:?]
	at uk.co.umbaska.Managers.Enums.runRegister(Enums.java:64) ~[?:?]
	at uk.co.umbaska.Managers.Register.registerAll(Register.java:40) ~[?:?]
	at uk.co.umbaska.Main.onEnable(Main.java:91) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) ~[spigot-1.8.7.jar:git-Spigot-44c59bf-1880a9c]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:340) [spigot-1.8.7.jar:git-Spigot-44c59bf-1880a9c]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [spigot-1.8.7.jar:git-Spigot-44c59bf-1880a9c]
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugin(CraftServer.java:356) [spigot-1.8.7.jar:git-Spigot-44c59bf-1880a9c]
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.enablePlugins(CraftServer.java:316) [spigot-1.8.7.jar:git-Spigot-44c59bf-1880a9c]
	at net.minecraft.server.v1_8_R3.MinecraftServer.s(MinecraftServer.java:418) [spigot-1.8.7.jar:git-Spigot-44c59bf-1880a9c]
	at net.minecraft.server.v1_8_R3.MinecraftServer.k(MinecraftServer.java:382) [spigot-1.8.7.jar:git-Spigot-44c59bf-1880a9c]
	at net.minecraft.server.v1_8_R3.MinecraftServer.a(MinecraftServer.java:337) [spigot-1.8.7.jar:git-Spigot-44c59bf-1880a9c]
	at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:256) [spigot-1.8.7.jar:git-Spigot-44c59bf-1880a9c]
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:528) [spigot-1.8.7.jar:git-Spigot-44c59bf-1880a9c]
	at java.lang.Thread.run(Thread.java:745) [?:1.7.0_79]