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Okay, I love using voxelmap on 1.8 and 1.7.10. The problem is that if I do a lot of traveling, such that whole map of the world becomes sufficiently big, the game crashes when I press M to open my map.

WARNING: coremods are present:
FMLPlugin (InventoryTweaks-1.59-176.jar)
FCFMLCorePlugin (FinderCompass-1.8.jar)
Contact their authors BEFORE contacting forge

// You're mean.

Time: 6/28/15 4:46 PM
Description: Rendering screen

java.util.ConcurrentModificationException
at java.util.SubList.checkForComodification(AbstractList.java:752)
at java.util.SubList.listIterator(AbstractList.java:682)
at java.util.AbstractList.listIterator(AbstractList.java:284)
at java.util.SubList.iterator(AbstractList.java:678)
at java.util.AbstractCollection.contains(AbstractCollection.java:82)
at java.util.AbstractCollection.removeAll(AbstractCollection.java:336)
at com.thevoxelbox.voxelmap.b.j.a(Unknown Source)
at com.thevoxelbox.voxelmap.b.g.func_73863_a(Unknown Source)
at net.minecraftforge.client.ForgeHooksClient.drawScreen(ForgeHooksClient.java:461)
at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1078)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1048)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:345)
at net.minecraft.client.main.Main.main(SourceFile:120)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

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

-- Head --
Stacktrace:
at java.util.SubList.checkForComodification(AbstractList.java:752)
at java.util.SubList.listIterator(AbstractList.java:682)
at java.util.AbstractList.listIterator(AbstractList.java:284)
at java.util.SubList.iterator(AbstractList.java:678)
at java.util.AbstractCollection.contains(AbstractCollection.java:82)
at java.util.AbstractCollection.removeAll(AbstractCollection.java:336)
at com.thevoxelbox.voxelmap.b.j.a(Unknown Source)
at com.thevoxelbox.voxelmap.b.g.func_73863_a(Unknown Source)
at net.minecraftforge.client.ForgeHooksClient.drawScreen(ForgeHooksClient.java:461)

-- Screen render details --
Details:
Screen name: com.thevoxelbox.voxelmap.b.g
Mouse location: Scaled: (256, 186). Absolute: (768, 341)
Screen size: Scaled: (480, 300). Absolute: (1440, 900). Scale factor of 3

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [EntityPlayerSP['durzanult'/47651084, l='MpServer', x=-361.50, y=69.10, z=-84.50]]
Chunk stats: MultiplayerChunkCache: 0, 0
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: 224.00,87.00,-100.00 - World: (224,87,-100), Chunk: (at 0,5,12 in 14,-7; contains blocks 224,0,-112 to 239,255,-97), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
Level time: 9080270 game time, 9113937 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: 21 total; [EntityPlayerSP['durzanult'/47651084, l='MpServer', x=-361.50, y=69.10, z=-84.50], EntityOtherPlayerMP['GothDragon8'/47655769, l='MpServer', x=-233.87, y=64.90, z=633.28], EntityPig['Pig'/47688793, l='MpServer', x=-489.56, y=69.00, z=291.34], EntityPig['Pig'/47688792, l='MpServer', x=-488.06, y=69.00, z=291.34], EntityOtherPlayerMP['LegendOfGold'/47653969, l='MpServer', x=178.55, y=103.43, z=-165.98], EntityPig['Pig'/47688795, l='MpServer', x=-489.56, y=69.00, z=292.84], EntityPig['Pig'/47688794, l='MpServer', x=-491.50, y=70.00, z=292.50], EntityOtherPlayerMP['LegendOfGold'/47653969, l='MpServer', x=-200.09, y=64.02, z=612.16], EntityOtherPlayerMP['GothDragon8'/47655769, l='MpServer', x=219.19, y=87.00, z=-110.31], EntityOtherPlayerMP['LegendOfGold'/47653969, l='MpServer', x=-200.09, y=64.00, z=612.16], EntityOtherPlayerMP['LegendOfGold'/47653969, l='MpServer', x=219.24, y=87.00, z=-111.48], EntityOtherPlayerMP['GothDragon8'/47655769, l='MpServer', x=-239.74, y=64.36, z=621.62], EntityOtherPlayerMP['LegendOfGold'/47653969, l='MpServer', x=-296.63, y=63.64, z=514.47], EntityFallingBlock['Falling Block'/47689379, l='MpServer', x=-473.50, y=15.84, z=319.50], EntitySheep['Sheep'/47688143, l='MpServer', x=-437.69, y=73.00, z=285.47], EntitySheep['Sheep'/47688140, l='MpServer', x=-426.50, y=63.00, z=268.50], EntitySheep['Sheep'/47688139, l='MpServer', x=-425.50, y=63.00, z=265.50], EntitySheep['Sheep'/47688138, l='MpServer', x=-428.50, y=64.00, z=265.50], EntitySheep['Sheep'/47688137, l='MpServer', x=-428.50, y=63.00, z=267.50], EntityFallingBlock['Falling Block'/47689372, l='MpServer', x=-455.50, y=14.84, z=325.50], EntityFallingBlock['Falling Block'/47689373, l='MpServer', x=-456.50, y=13.84, z=325.50]]
Retry entities: 0 total; []
Server brand: Spigot
Server type: Non-integrated multiplayer server
Stacktrace:
at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:351)
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2488)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:367)
at net.minecraft.client.main.Main.main(SourceFile:120)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
Minecraft Version: 1.8
Operating System: Mac OS X (x86_64) version 10.10.3
Java Version: 1.6.0_65, Apple Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
Memory: 285314656 bytes (272 MB) / 758824960 bytes (723 MB) up to 1065025536 bytes (1015 MB)
JVM Flags: 1 total; -Xmx1G
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
FML: MCP v9.10 FML v8.0.42.1341 Minecraft Forge 11.14.1.1341 6 mods loaded, 6 mods active
mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
FML{8.0.42.1341} [Forge Mod Loader] (forge-1.8-11.14.1.1341.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Forge{11.14.1.1341} [Minecraft Forge] (forge-1.8-11.14.1.1341.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
DamageIndicatorsMod{3.3.3} [Damage Indicators] ([1.8]DamageIndicatorsMod-3.3.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
FinderCompass{1.8a} [Finder Compass] (FinderCompass-1.8.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
inventorytweaks{1.59-176-9318a76-dirty} [Inventory Tweaks] (InventoryTweaks-1.59-176.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Loaded coremods (and transformers):
FMLPlugin (InventoryTweaks-1.59-176.jar)
invtweaks.forge.asm.ContainerTransformer
FCFMLCorePlugin (FinderCompass-1.8.jar)
atomicstryker.findercompass.client.coremod.FCTransformer
Launched Version: 1.8
LWJGL: 2.9.2
OpenGL: Intel HD Graphics 5000 OpenGL Engine GL version 2.1 INTEL-10.6.20, Intel Inc.
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because ARB_framebuffer_object 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)

Ive had this problem in 1.7.10 as well as 1.8... it happens whether or not Liteloader is hooked into forge or running on its own... as long as Voxel Map is installed, and the conditions I mentioned earlier are satisfied. It happens in both SMP and Singleplayer. This drives me crazy. Any Help guys?

Hello?

Update your java already, java 6 is not supported by a lot of mods, and this is one of those cases.

I use Java 8... That shouldn't be the problem... As the mod wouldn't even start up if it wasn't comparable with Java 8.

****... Why does it say Java 6? I swear I updated my Java like 50 times. Each time more painful than the last. (I have a Mac.)