[01:37:57] [Server thread/INFO]: [BossMessenger] Enabling BossMessenger v2.4.5
[01:37:58] [Server thread/ERROR]: Error occurred while enabling BossMessenger v2.4.5 (Is it up to date?)
java.lang.NoClassDefFoundError: org/bukkit/boss/BarColor
	at com.pixelatedev.bossmessenger.impl.a.h(ConfigManager.java:291) ~[?:?]
	at com.pixelatedev.bossmessenger.impl.a.c(ConfigManager.java:194) ~[?:?]
	at net.pixelatedd3v.bossmessenger.BossMessenger.onEnable(BossMessenger.java:75) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) ~[spigot-1.8.8.jar:git-Spigot-db6de12-07c3001]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:340) [spigot-1.8.8.jar:git-Spigot-db6de12-07c3001]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [spigot-1.8.8.jar:git-Spigot-db6de12-07c3001]
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugin(CraftServer.java:357) [spigot-1.8.8.jar:git-Spigot-db6de12-07c3001]
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.enablePlugins(CraftServer.java:317) [spigot-1.8.8.jar:git-Spigot-db6de12-07c3001]
	at net.minecraft.server.v1_8_R3.MinecraftServer.s(MinecraftServer.java:414) [spigot-1.8.8.jar:git-Spigot-db6de12-07c3001]
	at net.minecraft.server.v1_8_R3.MinecraftServer.k(MinecraftServer.java:378) [spigot-1.8.8.jar:git-Spigot-db6de12-07c3001]
	at net.minecraft.server.v1_8_R3.MinecraftServer.a(MinecraftServer.java:333) [spigot-1.8.8.jar:git-Spigot-db6de12-07c3001]
	at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:263) [spigot-1.8.8.jar:git-Spigot-db6de12-07c3001]
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:525) [spigot-1.8.8.jar:git-Spigot-db6de12-07c3001]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_72]
Caused by: java.lang.ClassNotFoundException: org.bukkit.boss.BarColor
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:91) ~[spigot-1.8.8.jar:git-Spigot-db6de12-07c3001]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86) ~[spigot-1.8.8.jar:git-Spigot-db6de12-07c3001]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_72]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_72]
	... 14 more