[03:42:59 ERROR]: Could not load 'plugins/SaneEconomyCore-0.13.1-SNAPSHOT.jar' in folder 'plugins' org.bukkit.plugin.InvalidPluginException: java.lang.IllegalArgumentException: Plugin already initialized! at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:133) ~[spigot.jar:git-Spigot-9b8bba4-bd30843] at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:327) ~[spigot.jar:git-Spigot-9b8bba4-bd30843] at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:248) [spigot.jar:git-Spigot-9b8bba4-bd30843] at org.bukkit.craftbukkit.v1_12_R1.CraftServer.loadPlugins(CraftServer.java:305) [spigot.jar:git-Spigot-9b8bba4-bd30843] at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:205) [spigot.jar:git-Spigot-9b8bba4-bd30843] at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:545) [spigot.jar:git-Spigot-9b8bba4-bd30843] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151] Caused by: java.lang.IllegalArgumentException: Plugin already initialized! at org.bukkit.plugin.java.PluginClassLoader.initialize(PluginClassLoader.java:183) ~[spigot.jar:git-Spigot-9b8bba4-bd30843] at org.bukkit.plugin.java.JavaPlugin.(JavaPlugin.java:60) ~[spigot.jar:git-Spigot-9b8bba4-bd30843] at org.appledash.saneeconomy.shaded.sanelib.SanePlugin.(SanePlugin.java:19) ~[?:?] at org.appledash.saneeconomy.SaneEconomy.(SaneEconomy.java:47) ~[?:?] at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_151] at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_151] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.8.0_151] at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[?:1.8.0_151] at java.lang.Class.newInstance(Class.java:442) ~[?:1.8.0_151] at org.bukkit.plugin.java.PluginClassLoader.(PluginClassLoader.java:90) ~[spigot.jar:git-Spigot-9b8bba4-bd30843] at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[spigot.jar:git-Spigot-9b8bba4-bd30843] ... 6 more Caused by: java.lang.IllegalStateException: Initial initialization at org.bukkit.plugin.java.PluginClassLoader.initialize(PluginClassLoader.java:186) ~[spigot.jar:git-Spigot-9b8bba4-bd30843] at org.bukkit.plugin.java.JavaPlugin.(JavaPlugin.java:60) ~[spigot.jar:git-Spigot-9b8bba4-bd30843] at tech.mcprison.prison.spigot.SpigotPrison.(SpigotPrison.java:58) ~[?:?] at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_151] at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_151] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.8.0_151] at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[?:1.8.0_151] at java.lang.Class.newInstance(Class.java:442) ~[?:1.8.0_151] at org.bukkit.plugin.java.PluginClassLoader.(PluginClassLoader.java:90) ~[spigot.jar:git-Spigot-9b8bba4-bd30843] at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[spigot.jar:git-Spigot-9b8bba4-bd30843] ... 6 more

@MCTyler

There is no logical reason why Prison would have anything to do this 🤔

Because you guys have SaneEconomy initializing in Prison Start. If I remove Prison, SaneEconomy works just fine.
PluginClassLoader.java:90) ~[spigot.jar:git-Spigot-9b8bba4-bd30843] at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[spigot.jar:git-Spigot-9b8bba4-bd30843] ... 6 more Caused by: java.lang.IllegalStateException: Initial initialization at org.bukkit.plugin.java.PluginClassLoader.initialize(PluginClassLoader.java:186) ~[spigot.jar:git-Spigot-9b8bba4-bd30843] at org.bukkit.plugin.java.JavaPlugin.(JavaPlugin.java:60) ~[spigot.jar:git-Spigot-9b8bba4-bd30843] at tech.mcprison.prison.spigot.SpigotPrison.(SpigotPrison.java:58) ~[?:?] at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_151] at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_151] at

I edited the Prison Repo and took out all references to Essentials and SaneEconomy and it works fine so as far as I'm concerned I fixed it. You can close till someone else has this issue.

I'm gonna assign this to me and look into this in more detail over the weekend.

Ah okay. Well considering this is a bug, I'll leave it open. Glad you got it fixed.

I just installed Sane Economy along with the Prison 3.1 dev build and, I couldn't reproduce this error. Closing this...

Probably Because I use CMI. Good no issue! I'll just keep my edited build.