[21:30:42 ERROR]: [mcMMO] There was an error while enabling mcMMO!
[21:30:42 WARN]: java.lang.StringIndexOutOfBoundsException: String index out of range: -1
[21:30:42 WARN]:        at java.lang.String.substring(String.java:1931)
[21:30:42 WARN]:        at com.gmail.nossr50.config.treasure.TreasureConfig.loadTreaures(TreasureConfig.java:242)
[21:30:42 WARN]:        at com.gmail.nossr50.config.treasure.TreasureConfig.loadKeys(TreasureConfig.java:137)
[21:30:42 WARN]:        at com.gmail.nossr50.config.treasure.TreasureConfig.<init>(TreasureConfig.java:74)
[21:30:42 WARN]:        at com.gmail.nossr50.config.treasure.TreasureConfig.getInstance(TreasureConfig.java:80)
[21:30:42 WARN]:        at com.gmail.nossr50.mcMMO.loadConfigFiles(mcMMO.java:406)
[21:30:42 WARN]:        at com.gmail.nossr50.mcMMO.onEnable(mcMMO.java:146)
[21:30:42 WARN]:        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:321)
[21:30:42 WARN]:        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:335)
[21:30:42 WARN]:        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405)
[21:30:42 WARN]:        at org.bukkit.craftbukkit.v1_8_R1.CraftServer.loadPlugin(CraftServer.java:356)
[21:30:42 WARN]:        at org.bukkit.craftbukkit.v1_8_R1.CraftServer.enablePlugins(CraftServer.java:316)
[21:30:42 WARN]:        at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:153)
[21:30:42 WARN]:        at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:505)
[21:30:42 WARN]:        at java.lang.Thread.run(Thread.java:748)
[21:30:42 INFO]: [mcMMO] Disabling mcMMO v1.5.04-SNAPSHOT-b82
[21:30:42 ERROR]: [mcMMO] Cannot read /home/minecraft/build/server/plugins/mcMMO/experience.yml(File Permissions?)
[21:30:42 ERROR]: [mcMMO] Cannot read /home/minecraft/build/server/plugins/mcMMO/repair.vanilla.yml(File Permissions?)
[21:30:42 ERROR]: Error occurred while disabling mcMMO v1.5.04-SNAPSHOT-b82 (Is it up to date?)
java.lang.NullPointerException