I recently updated my Mod from 1.8.9 to 1.9. In 1.8 everything worked fine (Server and Client). After the port the Client works perfectly, but when I start the Server I always get this crash:

 

net.minecraftforge.fml.common.LoaderException: java.lang.NoClassDefFoundError: de/dr_schnauzer/ac/core/items/HotIngot
at net.minecraftforge.fml.common.LoadController.transition(LoadController.java:179)
at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:559)
at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:93)
at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:320)
at net.minecraft.server.dedicated.DedicatedServer.startServer(DedicatedServer.java:119)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NoClassDefFoundError: de/dr_schnauzer/ac/core/items/HotIngot
at de.dr_schnauzer.ac.AlchemyCraft.preInit(AlchemyCraft.java:86)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:560)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:228)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:206)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:135)
at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:556)
... 5 more
Caused by: java.lang.ClassNotFoundException: de.dr_schnauzer.ac.core.items.HotIngot
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 33 more
Caused by: java.lang.NoClassDefFoundError: de/dr_schnauzer/ac/core/items/ACIngotRaw
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
... 35 more
Caused by: java.lang.ClassNotFoundException: de.dr_schnauzer.ac.core.items.ACIngotRaw
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:101)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 39 more

 

I double checked everything and the classes are definitely present at the Client and the Server. The only difference in the 1.8 and 1.9 Versions is the implementation of the IItemColor Interface. Maybe someone out here can help me out here.

 

Also (not quite the Topic, but also related to the Server) when starting the Server in Intelij Idea, the Log doesn't work. The only Log printed is this:

Calling tweak class net.minecraftforge.fml.common.launcher.FMLServerTweaker
ERROR Error processing element TerminalConsole: CLASS_NOT_FOUND
ERROR Error processing element TerminalConsole: CLASS_NOT_FOUND
WARN Unable to instantiate org.fusesource.jansi.WindowsAnsiOutputStream
ERROR Unable to locate appender Console for logger com.mojang
ERROR Unable to locate appender FmlConsole for logger 
ERROR Unable to locate appender Console for logger net.minecraft
WARN Unable to instantiate org.fusesource.jansi.WindowsAnsiOutputStream
ERROR Error processing element TerminalConsole: CLASS_NOT_FOUND
ERROR Error processing element TerminalConsole: CLASS_NOT_FOUND
WARN Unable to instantiate org.fusesource.jansi.WindowsAnsiOutputStream
ERROR Unable to locate appender Console for logger com.mojang
ERROR Unable to locate appender FmlConsole for logger 
ERROR Unable to locate appender Console for logger net.minecraft

Can you send the crash report file?

I fixed it. I didn't realize the IItemColor class itself was clientside only and used it on both sides. *facepalm*

 

The only thing that is left is the broken Log Connection between the Intellij Idea console and the Minecraft Server. But that is not a gamebreaker.