[1.7.10] Server - No Class Def Found Error [SOLVED]

[Rui]

Used the tutorial provided by MrCaracal and some snooping around in other mods to figure out proxies. In short: entities went in the common proxy, renderer went in the client proxy. Shocker!

 

-------- SOLVED ---------

 

Yup, can't get my mod to work on a server.

 

 

---- Minecraft Crash Report ----

// Surprise! Haha. Well, this is awkward.

 

Time: 12/11/14 11:37 AM

Description: Exception in server tick loop

 

java.lang.NoClassDefFoundError: net/minecraft/client/renderer/entity/Render

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Unknown Source)

at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:420)

at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

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 cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:208)

at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:187)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

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 cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:118)

at cpw.mods.fml.common.Loader.loadMods(Loader.java:492)

at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:87)

at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:314)

at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:117)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387)

at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)

Caused by: java.lang.ClassNotFoundException: net.minecraft.client.renderer.entity.Render

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)

at java.lang.ClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

... 29 more

Caused by: java.lang.NullPointerException

 

 

A detailed walkthrough of the error, its code path and all known details is as follows:

---------------------------------------------------------------------------------------

 

-- System Details --

Details:

Minecraft Version: 1.7.10

Operating System: Windows 7 (amd64) version 6.1

Java Version: 1.7.0_55, Oracle Corporation

Java VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation

Memory: 1926384864 bytes (1837 MB) / 2058878976 bytes (1963 MB) up to 2058878976 bytes (1963 MB)

JVM Flags: 2 total; -Xms2G -Xmx2G

AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used

IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0

FML: MCP v9.05 FML v7.10.85.1232 Minecraft Forge 10.13.2.1232 40 mods loaded, 40 mods active

mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed

FML{7.10.85.1232} [Forge Mod Loader] (forge.jar) Unloaded->Constructed

Forge{10.13.2.1232} [Minecraft Forge] (forge.jar) Unloaded->Constructed

appliedenergistics2-core{rv1-stable-1} [AppliedEnergistics2 Core] (minecraft.jar) Unloaded->Constructed

CodeChickenCore{1.0.4.29} [CodeChicken Core] (minecraft.jar) Unloaded->Constructed

ThaumicTinkerer-preloader{0.1} [Thaumic Tinkerer Core] (minecraft.jar) Unloaded->Constructed

doggytalents{v1.8.2a} [Doggy Talents] ([1.7.10] Doggy Talents - v1.8.2a.zip) Unloaded->Constructed

bspkrsCore{6.15} [bspkrsCore] ([1.7.10]bspkrsCore-universal-6.15.jar) Unloaded->Constructed

Treecapitator{1.7.10} [Treecapitator] ([1.7.10]Treecapitator-universal-2.0.4.jar) Unloaded->Constructed

AppleCore{1.0.1} [AppleCore] (AppleCore-mc1.7.10-1.0.1.jar) Unloaded->Constructed

appliedenergistics2{rv1-stable-1} [Applied Energistics 2] (appliedenergistics2-rv1-stable-1.jar) Unloaded->Constructed

BiomesOPlenty{2.1.0} [biomes O' Plenty] (BiomesOPlenty-1.7.10-2.1.0.1019-universal.jar) Unloaded->Constructed

Baubles{1.0.1.10} [baubles] (Baubles-1.7.10-1.0.1.10.jar) Unloaded->Constructed

Thaumcraft{4.2.1.4} [Thaumcraft] (Thaumcraft-1.7.10-4.2.1.4.jar) Unloaded->Constructed

Botania{r1.3-141} [botania] (Botania r1.3-141.jar) Unloaded->Constructed

BuildCraft|Core{6.1.8} [buildCraft] (buildcraft-6.1.8.jar) Unloaded->Constructed

BuildCraft|Builders{6.1.8} [bC Builders] (buildcraft-6.1.8.jar) Unloaded->Constructed

BuildCraft|Energy{6.1.8} [bC Energy] (buildcraft-6.1.8.jar) Unloaded->Constructed

BuildCraft|Factory{6.1.8} [bC Factory] (buildcraft-6.1.8.jar) Unloaded->Constructed

BuildCraft|Transport{6.1.8} [bC Transport] (buildcraft-6.1.8.jar) Unloaded->Constructed

BuildCraft|Silicon{6.1.8} [bC Silicon] (buildcraft-6.1.8.jar) Unloaded->Constructed

CarpentersBlocks{3.3.3} [Carpenter's Blocks] (Carpenter's Blocks v3.3.3 - MC 1.7.10.jar) Unloaded->Constructed

ChickenChunks{1.3.4.14} [ChickenChunks] (ChickenChunks-1.7.10-1.3.4.14-universal (1).jar) Unloaded->Constructed

clockworkphase{1.7.10_1.0a} [Clockwork Phase] (clockworkphase-1.7.10_1.0a.jar) Unloaded->Constructed

craftguide{1.6.8.1} [CraftGuide] (CraftGuide-1.6.8.1.zip) Unloaded->Constructed

IC2{2.2.654-experimental} [industrialCraft 2] (industrialcraft-2-2.2.654-experimental.jar) Unloaded->Constructed

EMT{2.0.0Alpha4} [Electro-Magic Tools] (ElectroMagicTools-1.7.10-2.0.0Alpha-28.jar) Unloaded->Constructed

eplus{3.0.2-d} [Enchanting Plus] (EnchantingPlus-1.7.10-3.0.2-d.jar) Unloaded->Constructed

EnderStorage{1.4.5.26} [EnderStorage] (EnderStorage-1.7.10-1.4.5.26-universal.jar) Unloaded->Constructed

ExtraUtilities{1.2.0} [Extra Utilities] (extrautilities-1.2.0.jar) Unloaded->Constructed

FastCraft{1.9} [FastCraft] (fastcraft-1.9.jar) Unloaded->Constructed

harvestcraft{1.7.10b} [Pam's HarvestCraft] (Pam's HarvestCraft 1.7.10c.jar) Unloaded->Constructed

HungerOverhaul{1.7.10-beta.2.jenkins30} [Hunger Overhaul] (HungerOverhaul-1.7.10-beta.2.jar) Unloaded->Constructed

LivelyAnimals{0.0001} [Lively Animals] (LivelyAnimals.jar) Unloaded

magicalcrops{1.7.2 - 0.1 ALPHA} [Magical Crops] (magicalcrops-1.7.10_0.1.jar) Unloaded

SpiceOfLife{1.2.2} [The Spice of Life] (SpiceOfLife-mc1.7.10-1.2.2.jar) Unloaded

StorageDrawers{1.2.0} [storage Drawers] (StorageDrawers-1.7.10-1.2.0.jar) Unloaded

thaumicenergistics{0.8.7b} [Thaumic Energistics] (thaumicenergistics-0.8.7b.jar) Unloaded

ThaumicTinkerer{unspecified} [Thaumic Tinkerer] (ThaumicTinkerer-2.5-1.7.10-161.jar) Unloaded

YALSM{2.1.3} [Yet Another Leather Smelting Mod] (yalsm-2.1.3.jar) Unloaded

AE2 Version: stable rv1-stable-1 for Forge 10.13.0.1187

Profiler Position: N/A (disabled)

Is Modded: Definitely; Server brand changed to 'fml,forge'

Type: Dedicated Server (map_server.txt)

 

 

I assume it probably has something to do with rendering being client-side only, but I'm not sure how to account for that. I tried using the @ClientSide Only tag as a quick, temporary fix, but that didn't do it either.

 

... inexplicably, it does work on Single player but the back legs don't seem to render. I figured the problems were probably one in the same though.

[Ernio]

1. Provide code

2. Server has no rendering, Minecraft and many other classes.

3. You need to use proxy and Side.CLIENT or world.isRemote (depends)

[Rui]

There isn't much to show; it's just your standard entity renderer.

 

http://pastebin.com/WykSkZd2

 

Could you explain a little more what you mean when you say proxy? And where would I need to put this code? In the constructor of the class?

 

Edit: And my model class for the heck of it: http://pastebin.com/13Ajkf50

[MrCaracal]

You are correct in that this issue is caused by rendering classes being "client-side" only - meaning that the rendering classes don't exist at all on a dedicated server.

 

What you need is a way to ensure that your rendering stuff is only called upon by the Minecraft client. The way this is accomplished is by the use of a proxy class, like Ernio said. You will create two classes with identical method signatures: one that will be loaded for the client, one that will be loaded for the server. If you make your client proxy class inherit from your common proxy class and override the common proxy's methods, you will be able to call methods in your common proxy instance and have them execute one way on the "client" and one way on the "server."

 

This is useful for separating your rendering stuff between "sides". If your rendering stuff is only registered in your client proxy, it will only ever load that stuff on a client. Here's the wiki tutorial on how to write a proxy class -> http://www.minecraftforge.net/wiki/Proxies

 

Attempting to use the @ClientSideOnly or @SideOnly annotations was logical given their names, but not quite what those are meant to be used for. Those annotations simply mean "the following field or method should only exist to the specified side". They can cause problems if one side is expecting that field or method and it is tagged to only "exist" on the other, so they should be used sparingly and only on fields and methods that you know will only be used on one side; one example being IIcon fields and related methods.

[Rui]

Good news: Got the proxy thing figured out! I'm surprised I was able to do it without any problem.

 

Bad news: ... my pigs are still bipedal. Any ideas for why this is happening?

[hotrods20]

At some point you aren't declaring them to use your model or the default model.

[Rui]

How's that? I overrode the original model in the hashmap for entities, so I'm not sure what more I could do.

 

Edit: Well, that is extremely bizarre. I decided to update my mod to .1240, and once I transferred the files over I could see that the back legs didn't actually have a texture. Which is WEIRD because I DID texture them, and they showed up absolutely fine on eclipse. It's only when I moved folders that that showed up.

 

In any case, problems solved!

[Rui]

Actually, not quite solved yet. Didn't realize this until I did some testing, but for some reason my serverside code isn't running.

 

Main: http://pastebin.com/r5Ek7JwZ

 

Server Proxy: http://pastebin.com/yMEHq32n

 

Edit: Nevermind, forgot to put the super.init in the client proxy orz