hello guys,

I have just updated my mod to 1.8, and of course I got some problems.

I have solved most myself, but is a problem I don't know how to solve.

 

 

The problem is:

On random moments, (The most in my own dimension, but not always), minecraft just crashes.

It seems to be something with entity rendering.

 

Here is a crash report:

 

---- Minecraft Crash Report ----

// Don't do that.

 

Time: 9-12-14 7:49

Description: Unexpected error

 

java.util.ConcurrentModificationException

at java.util.HashMap$HashIterator.nextNode(HashMap.java:1429)

at java.util.HashMap$KeyIterator.next(HashMap.java:1453)

at com.google.common.collect.AbstractMapBasedMultimap$WrappedCollection$WrappedIterator.next(AbstractMapBasedMultimap.java:486)

at net.minecraft.util.ClassInheritanceMultiMap$2.computeNext(ClassInheritanceMultiMap.java:125)

at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)

at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)

at net.minecraft.client.renderer.RenderGlobal.renderEntities(RenderGlobal.java:615)

at net.minecraft.client.renderer.EntityRenderer.renderWorldPass(EntityRenderer.java:1294)

at net.minecraft.client.renderer.EntityRenderer.renderWorld(EntityRenderer.java:1207)

at net.minecraft.client.renderer.EntityRenderer.updateCameraAndRender(EntityRenderer.java:1032)

at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1048)

at net.minecraft.client.Minecraft.run(Minecraft.java:345)

at net.minecraft.client.main.Main.main(Main.java:117)

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:483)

at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)

at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:78)

at GradleStart.main(GradleStart.java:45)

 

 

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

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

 

-- Head --

Stacktrace:

at java.util.HashMap$HashIterator.nextNode(HashMap.java:1429)

at java.util.HashMap$KeyIterator.next(HashMap.java:1453)

at com.google.common.collect.AbstractMapBasedMultimap$WrappedCollection$WrappedIterator.next(AbstractMapBasedMultimap.java:486)

at net.minecraft.util.ClassInheritanceMultiMap$2.computeNext(ClassInheritanceMultiMap.java:125)

at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)

at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)

at net.minecraft.client.renderer.RenderGlobal.renderEntities(RenderGlobal.java:615)

at net.minecraft.client.renderer.EntityRenderer.renderWorldPass(EntityRenderer.java:1294)

at net.minecraft.client.renderer.EntityRenderer.renderWorld(EntityRenderer.java:1207)

 

-- Affected level --

Details:

Level name: MpServer

All players: 1 total; [EntityPlayerSP['Player369'/192, l='MpServer', x=1241,09, y=4,00, z=220,63]]

Chunk stats: MultiplayerChunkCache: 625, 625

Level seed: 0

Level generator: ID 01 - flat, ver 0. Features enabled: false

Level generator options:

Level spawn location: 1155,00,4,00,150,00 - World: (1155,4,150), Chunk: (at 3,0,6 in 72,9; contains blocks 1152,0,144 to 1167,255,159), Region: (2,0; contains chunks 64,0 to 95,31, blocks 1024,0,0 to 1535,255,511)

Level time: 23328 game time, 23328 day time

Level dimension: 0

Level storage version: 0x00000 - Unknown?

Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)

Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false

Forced entities: 70 total; [EntityItem['item.tile.dirt.default'/122888, l='MpServer', x=1177,00, y=2,00, z=161,91], EntityXPOrb['Experience Orb'/105482, l='MpServer', x=1361,06, y=4,00, z=157,91], EntityXPOrb['Experience Orb'/105486, l='MpServer', x=1362,06, y=4,00, z=156,75], EntityXPOrb['Experience Orb'/105488, l='MpServer', x=1364,34, y=4,00, z=156,16], EntitySlime['Slime'/195629, l='MpServer', x=1240,50, y=4,00, z=148,88], EntityItem['item.tile.dirt.default'/122938, l='MpServer', x=1175,81, y=2,00, z=160,13], EntityZombie['Zombie'/92, l='MpServer', x=1178,38, y=4,00, z=183,44], EntitySpider['Spider'/96, l='MpServer', x=1165,41, y=4,00, z=208,06], EntityZombie['Zombie'/104, l='MpServer', x=1175,75, y=4,00, z=155,75], EntityZombie['Zombie'/105, l='MpServer', x=1173,53, y=4,00, z=144,78], EntityZombie['Zombie'/106, l='MpServer', x=1174,66, y=4,00, z=152,94], EntityZombie['Zombie'/107, l='MpServer', x=1175,88, y=4,00, z=156,78], EntityZombie['Zombie'/108, l='MpServer', x=1174,84, y=4,00, z=154,91], EntityLifeEye['Life Eye'/109, l='MpServer', x=1236,85, y=4,00, z=218,39], EntitySlime['Slime'/156271, l='MpServer', x=1208,34, y=4,02, z=280,47], EntityZombie['Zombie'/111, l='MpServer', x=1176,91, y=4,00, z=157,59], EntityZombie['Zombie'/112, l='MpServer', x=1176,59, y=4,00, z=154,41], EntityLifeEye['Life Eye'/113, l='MpServer', x=1237,99, y=4,00, z=218,96], EntityLifeEye['Life Eye'/114, l='MpServer', x=1179,16, y=3,91, z=157,09], EntityCreeper['Creeper'/116, l='MpServer', x=1169,41, y=4,00, z=166,88], EntityCreeper['Creeper'/117, l='MpServer', x=1184,66, y=4,00, z=172,47], EntitySpider['Spider'/118, l='MpServer', x=1221,75, y=4,00, z=207,84], EntityCreeper['Creeper'/119, l='MpServer', x=1182,81, y=4,00, z=213,61], EntitySpider['Spider'/121, l='MpServer', x=1189,13, y=4,00, z=217,41], EntitySpider['Spider'/122, l='MpServer', x=1193,97, y=4,00, z=221,32], EntitySpider['Spider'/123, l='MpServer', x=1193,66, y=4,00, z=224,00], EntitySkeleton['Skeleton'/137, l='MpServer', x=1201,88, y=4,00, z=154,66], EntitySpider['Spider'/138, l='MpServer', x=1229,49, y=4,00, z=217,27], EntitySpider['Spider'/146, l='MpServer', x=1233,86, y=4,00, z=211,94], EntityVillager['Villager'/154, l='MpServer', x=1268,00, y=5,00, z=199,09], EntityVillager['Villager'/155, l='MpServer', x=1279,47, y=6,00, z=195,50], EntityVillager['Villager'/156, l='MpServer', x=1266,91, y=5,00, z=200,06], EntityVillager['Villager'/158, l='MpServer', x=1292,50, y=5,00, z=177,69], EntityVillager['Villager'/159, l='MpServer', x=1291,66, y=5,00, z=176,66], EntityVillager['Villager'/160, l='MpServer', x=1280,06, y=5,00, z=189,50], EntityVillager['Villager'/161, l='MpServer', x=1293,00, y=5,00, z=176,09], EntityVillager['Villager'/162, l='MpServer', x=1292,38, y=5,00, z=175,19], EntityVillager['Villager'/165, l='MpServer', x=1307,47, y=7,00, z=189,69], EntityVillager['Villager'/166, l='MpServer', x=1307,47, y=6,00, z=188,56], EntityVillager['Villager'/169, l='MpServer', x=1301,28, y=5,00, z=204,25], EntityVillager['Villager'/170, l='MpServer', x=1302,38, y=5,00, z=204,09], EntityVillager['Villager'/171, l='MpServer', x=1301,28, y=5,00, z=205,19], EntityVillager['Villager'/173, l='MpServer', x=1315,81, y=5,00, z=190,66], EntityVillager['Villager'/176, l='MpServer', x=1316,69, y=5,00, z=191,91], EntityVillager['Villager'/178, l='MpServer', x=1315,44, y=5,00, z=192,09], EntityBlood['entity.Blood.name'/205019, l='MpServer', x=1240,00, y=5,25, z=218,75], EntityBlood['entity.Blood.name'/205018, l='MpServer', x=1239,44, y=4,00, z=221,00], EntityBlood['entity.Blood.name'/205016, l='MpServer', x=1240,19, y=4,97, z=219,81], EntityBlood['entity.Blood.name'/205023, l='MpServer', x=1241,47, y=4,00, z=218,63], EntityBlood['entity.Blood.name'/205021, l='MpServer', x=1239,06, y=4,00, z=219,44], EntityItem['item.tile.dirt.default'/122616, l='MpServer', x=1176,25, y=1,00, z=161,88], EntityCreeper['Creeper'/30981, l='MpServer', x=1217,78, y=4,00, z=185,44], EntityCreeper['Creeper'/30985, l='MpServer', x=1224,50, y=4,00, z=168,50], EntityCreeper['Creeper'/30986, l='MpServer', x=1222,63, y=4,00, z=160,97], EntityZombie['Zombie'/30990, l='MpServer', x=1232,33, y=4,00, z=214,19], EntityItem['item.tile.dirt.default'/122655, l='MpServer', x=1175,06, y=3,00, z=162,88], EntitySlime['Slime'/190241, l='MpServer', x=1251,83, y=4,07, z=242,83], EntitySkeleton['Skeleton'/31014, l='MpServer', x=1191,41, y=4,00, z=173,16], EntityCreeper['Creeper'/31058, l='MpServer', x=1193,50, y=4,00, z=215,50], EntitySkeleton['Skeleton'/31059, l='MpServer', x=1183,00, y=4,00, z=218,06], EntitySpider['Spider'/31088, l='MpServer', x=1181,72, y=4,00, z=164,78], EntityItem['item.tile.dirt.default'/122249, l='MpServer', x=1176,78, y=2,00, z=163,13], EntityZombie['Zombie'/31113, l='MpServer', x=1234,29, y=4,00, z=216,69], EntitySlime['Slime'/158091, l='MpServer', x=1265,22, y=4,00, z=252,28], EntityItem['item.tile.dirt.default'/122773, l='MpServer', x=1178,88, y=2,00, z=160,50], EntityItem['item.tile.dirt.default'/122260, l='MpServer', x=1178,88, y=2,00, z=163,28], EntitySlime['Slime'/126386, l='MpServer', x=1159,57, y=4,28, z=188,74], EntityPlayerSP['Player369'/192, l='MpServer', x=1171,28, y=4,00, z=143,76], EntityPlayerSP['Player369'/192, l='MpServer', x=1241,09, y=4,00, z=220,63], EntityItem['item.tile.dirt.default'/122356, l='MpServer', x=1177,66, y=2,00, z=163,22]]

Retry entities: 0 total; []

Server brand: fml,forge

Server type: Integrated singleplayer server

Stacktrace:

at net.minecraft.client.multiplayer.WorldClient.addWorldInfoToCrashReport(WorldClient.java:350)

at net.minecraft.client.Minecraft.addGraphicsAndWorldToCrashReport(Minecraft.java:2488)

at net.minecraft.client.Minecraft.run(Minecraft.java:374)

at net.minecraft.client.main.Main.main(Main.java:117)

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:483)

at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)

at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:78)

at GradleStart.main(GradleStart.java:45)

 

-- System Details --

Details:

Minecraft Version: 1.8

Operating System: Windows 8.1 (amd64) version 6.3

Java Version: 1.8.0_05, Oracle Corporation

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

Memory: 733499976 bytes (699 MB) / 1038876672 bytes (990 MB) up to 1038876672 bytes (990 MB)

JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M

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

FML: MCP v9.10 FML v8.0.12.1260 Minecraft Forge 11.14.0.1260 4 mods loaded, 4 mods active

mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

FML{8.0.12.1260} [Forge Mod Loader] (forgeSrc-1.8-11.14.0.1260-1.8.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

Forge{11.14.0.1260} [Minecraft Forge] (forgeSrc-1.8-11.14.0.1260-1.8.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

knokkorpg{0.0.0} [Knokko RPG] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

Launched Version: 1.8

LWJGL: 2.9.1

OpenGL: Intel® HD Graphics 4000 GL version 4.0.0 - Build 10.18.10.3621, Intel

GL Caps: Using GL 1.3 multitexturing.

Using GL 1.3 texture combiners.

Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.

Shaders are available because OpenGL 2.1 is supported.

VBOs are available because OpenGL 1.5 is supported.

 

Using VBOs: No

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

Type: Client (map_client.txt)

Resource Packs: []

Current Language: English (US)

Profiler Position: N/A (disabled)

 

 

Does anybody understand what goes wrong?

I can hardly play and update my mod on this way.

The ChunkPrimer wasn't as difficult as I thought. It is actually easier than the previous way in 1.7.

But WorldData doesn't save anything and my game still crashes on random moments with almost the same report as I posted.

It is probably something with particles, but I don't want to remove everything that spawns particles.

I think I know the problem:

I am saving data in a tag saved as the players UUID.

In 1.7.10 I always played with ForgeDevName, but now I am playing with many different players while testing in eclipse.

So I always join with another UUID.

 

And about my other problem:

It is really difficult to solve because I can't edit the base codes.

Does anybody know how I could solve the random crashes?

Do you mean you can't "view" the base codes? Because you certainly should not be editing them, it is deliberate that you cannot. If you can't view the code, it might be a workspace issue; you might try carefully stepping through the setup process again.

 

As far as your random crashes, ConcurrentModificationExceptions are typically caused by modifying an iterable collection while still traversing it. Is there any place where you're editing some form of Collection at the same time as you (or some other vanilla code) is iterating through it?

I can view the base codes easily, but I can't edit them.

Otherwise I would put it in a try statement and I should be done.

 

I am not doing anything with iterators, I am only spawning large numbers of particles, and minecraft sometimes fails to render them and the game crashes than.

Sometimes, minecraft forge edits the base codes of minecraft.

Would they solve this problem for me if I just ask?

I have never wanted to do something with the base codes, but I see no better solution for this problem.

Shall I ask it to the authors of minecraft forge?

But why is the crash on the client?

And why was nothing wrong in 1.7.10?

 

And the crash is after spawning the particles, and not directly.

That's why it is so difficult to solve.

Isn't it very easy for minecraftforge to solve this?

Wouldn't a simple try/catch solve this?

The chance of crashing seems to be very small, so it doesn't always fail.

I thought the render should fail the current tick, and it would go better the tick after it.

In that case, ignoring would be better than crashing.

But if the problem is not going to solve itself...

Than this will be a big problem.

I have allready readed what it is.

But I didn't understand it completely, I think it means that an important collection is modified.

 

But anyway:

I believe I will have to wait until minecraft forge solve this problem and just do something else until than.

I don't think I can do anything.

This helps understanding it.

So I can't help it really and I just have to wait for minecraft forge to solve this?