Error occurred while enabling LeaderHeads v10.1 (Is it up to date?)
java.lang.StringIndexOutOfBoundsException: String index out of range: 1
	at java.lang.String.substring(String.java:1963) ~[?:1.8.0_72]
	at me.robin.leaderheads.s.b.<init>(GangsPlusManager.java:89) ~[?:?]
	at me.robin.leaderheads.LeaderHeads.onEnable(LeaderHeads.java:379) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321) ~[prison.jar:git-Spigot-db6de12-efe04b8]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:340) [prison.jar:git-Spigot-db6de12-efe04b8]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [prison.jar:git-Spigot-db6de12-efe04b8]
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugin(CraftServer.java:357) [prison.jar:git-Spigot-db6de12-efe04b8]
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.enablePlugins(CraftServer.java:317) [prison.jar:git-Spigot-db6de12-efe04b8]
	at net.minecraft.server.v1_8_R3.MinecraftServer.s(MinecraftServer.java:414) [prison.jar:git-Spigot-db6de12-efe04b8]
	at net.minecraft.server.v1_8_R3.MinecraftServer.k(MinecraftServer.java:378) [prison.jar:git-Spigot-db6de12-efe04b8]
	at net.minecraft.server.v1_8_R3.MinecraftServer.a(MinecraftServer.java:333) [prison.jar:git-Spigot-db6de12-efe04b8]
	at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:263) [prison.jar:git-Spigot-db6de12-efe04b8]
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:525) [prison.jar:git-Spigot-db6de12-efe04b8]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_72]