[00:22:23] [Server thread/INFO]: Starting minecraft server version 1.8.7
[00:22:23] [Server thread/INFO]: Loading properties
[00:22:23] [Server thread/INFO]: Default game type: SURVIVAL
[00:22:23] [Server thread/INFO]: Generating keypair
[00:22:23] [Server thread/INFO]: Starting Minecraft server on *:25565
[00:22:23] [Server thread/INFO]: Using default channel type
[00:22:24] [Server thread/INFO]: This server is running CraftBukkit version git-Bukkit-3d5ab8f (MC: 1.8.7) (Implementing API version 1.8.7-R0.1-SNAPSHOT)
[00:22:24] [Server thread/INFO]: [Vault] [Economy] UltimateCore found: Loaded
[00:22:24] [Server thread/ERROR]: Could not load 'plugins\UltimateCore.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.ExceptionInInitializerError
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:133) ~[craftbukkit-1.8.7.jar:git-Bukkit-3d5ab8f]
	at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:328) ~[craftbukkit-1.8.7.jar:git-Bukkit-3d5ab8f]
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [craftbukkit-1.8.7.jar:git-Bukkit-3d5ab8f]
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugins(CraftServer.java:288) [craftbukkit-1.8.7.jar:git-Bukkit-3d5ab8f]
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.<init>(CraftServer.java:250) [craftbukkit-1.8.7.jar:git-Bukkit-3d5ab8f]
	at net.minecraft.server.v1_8_R3.PlayerList.<init>(PlayerList.java:69) [craftbukkit-1.8.7.jar:git-Bukkit-3d5ab8f]
	at net.minecraft.server.v1_8_R3.DedicatedPlayerList.<init>(SourceFile:14) [craftbukkit-1.8.7.jar:git-Bukkit-3d5ab8f]
	at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:179) [craftbukkit-1.8.7.jar:git-Bukkit-3d5ab8f]
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:503) [craftbukkit-1.8.7.jar:git-Bukkit-3d5ab8f]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_40]
Caused by: java.lang.ExceptionInInitializerError
	at java.lang.Class.forName0(Native Method) ~[?:1.8.0_40]
	at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_40]
	at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:40) ~[craftbukkit-1.8.7.jar:git-Bukkit-3d5ab8f]
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[craftbukkit-1.8.7.jar:git-Bukkit-3d5ab8f]
	... 9 more
Caused by: java.lang.NullPointerException
	at bammerbom.ultimatecore.bukkit.resources.classes.ErrorLogger.log(ErrorLogger.java:47) ~[?:?]
	at bammerbom.ultimatecore.bukkit.UltimateCore.<clinit>(UltimateCore.java:54) ~[?:?]
	at java.lang.Class.forName0(Native Method) ~[?:1.8.0_40]
	at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_40]
	at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:40) ~[craftbukkit-1.8.7.jar:git-Bukkit-3d5ab8f]
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[craftbukkit-1.8.7.jar:git-Bukkit-3d5ab8f]
	... 9 more