Hey. I received this error yesterday. I haven't played in about a week, and I don't think anything changed/updated. I get this message when I try to open my saved world, however a new world works fine. Here is the report. TIA :)

 

---- Minecraft Crash Report ----
// I blame Dinnerbone.

Time: 11/3/21 11:17 AM
Description: Rendering entity in world

java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
    at java.util.ArrayList.rangeCheck(ArrayList.java:653)
    at java.util.ArrayList.get(ArrayList.java:429)
    at minecrafttransportsimulator.rendering.components.RenderableModelObject.generateTreads(RenderableModelObject.java:705)
    at minecrafttransportsimulator.rendering.components.RenderableModelObject.doTreadRendering(RenderableModelObject.java:348)
    at minecrafttransportsimulator.rendering.components.RenderableModelObject.render(RenderableModelObject.java:159)
    at minecrafttransportsimulator.rendering.components.ARenderEntity.render(ARenderEntity.java:100)
    at minecrafttransportsimulator.mcinterface.InterfaceEventsModelLoader$1$1.doRender(InterfaceEventsModelLoader.java:87)
    at minecrafttransportsimulator.mcinterface.InterfaceEventsModelLoader$1$1.func_76986_a(InterfaceEventsModelLoader.java:63)
    at net.minecraft.client.renderer.entity.RenderManager.func_188391_a(RenderManager.java:384)
    at net.minecraft.client.renderer.entity.RenderManager.func_188388_a(RenderManager.java:368)
    at net.minecraft.client.renderer.RenderGlobal.func_180446_a(RenderGlobal.java:628)
    at net.minecraft.client.renderer.EntityRenderer.func_175068_a(EntityRenderer.java:1347)
    at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1259)
    at net.minecraft.client.renderer.EntityRenderer.func_181560_a(EntityRenderer.java:1062)
    at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1119)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:398)
    at net.minecraft.client.main.Main.main(SourceFile:123)
    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:498)
    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 --
Thread: Client thread
Stacktrace:
    at java.util.ArrayList.rangeCheck(ArrayList.java:653)
    at java.util.ArrayList.get(ArrayList.java:429)
    at minecrafttransportsimulator.rendering.components.RenderableModelObject.generateTreads(RenderableModelObject.java:705)
    at minecrafttransportsimulator.rendering.components.RenderableModelObject.doTreadRendering(RenderableModelObject.java:348)
    at minecrafttransportsimulator.rendering.components.RenderableModelObject.render(RenderableModelObject.java:159)
    at minecrafttransportsimulator.rendering.components.ARenderEntity.render(ARenderEntity.java:100)
    at minecrafttransportsimulator.mcinterface.InterfaceEventsModelLoader$1$1.doRender(InterfaceEventsModelLoader.java:87)
    at minecrafttransportsimulator.mcinterface.InterfaceEventsModelLoader$1$1.func_76986_a(InterfaceEventsModelLoader.java:63)

-- Entity being rendered --
Details:
    Entity Type: mts:mts_entity_renderer (minecrafttransportsimulator.mcinterface.BuilderEntityRenderForwarder)
    Entity ID: 615
    Entity Name: entity.mts_entity_renderer.name
    Entity's Exact location: 417.73, 117.01, -3675.59
    Entity's Block location: World: (417,117,-3676), Chunk: (at 1,7,4 in 26,-230; contains blocks 416,0,-3680 to 431,255,-3665), Region: (0,-8; contains chunks 0,-256 to 31,-225, blocks 0,0,-4096 to 511,255,-3585)
    Entity's Momentum: 0.00, 0.00, 0.00
    Entity's Passengers: []
    Entity's Vehicle: ~~ERROR~~ NullPointerException: null

-- Renderer details --
Details:
    Assigned renderer: minecrafttransportsimulator.mcinterface.InterfaceEventsModelLoader$1$1@73943ff7
    Location: -0.79,1.01,0.05 - World: (-1,1,0), Chunk: (at 15,0,0 in -1,0; contains blocks -16,0,0 to -1,255,15), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
    Rotation: 0.0
    Delta: 0.19999695
Stacktrace:
    at net.minecraft.client.renderer.entity.RenderManager.func_188391_a(RenderManager.java:384)
    at net.minecraft.client.renderer.entity.RenderManager.func_188388_a(RenderManager.java:368)
    at net.minecraft.client.renderer.RenderGlobal.func_180446_a(RenderGlobal.java:628)
    at net.minecraft.client.renderer.EntityRenderer.func_175068_a(EntityRenderer.java:1347)
    at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1259)

-- Affected level --
Details:
    Level name: MpServer
    All players: 1 total; [EntityPlayerSP['ChiefCarter3749'/17, l='MpServer', x=418.52, y=116.00, z=-3675.64]]
    Chunk stats: MultiplayerChunkCache: 625, 625
    Level seed: 0
    Level generator: ID 00 - default, ver 1. Features enabled: false
    Level generator options:
    Level spawn location: World: (52,64,245), Chunk: (at 4,4,5 in 3,15; contains blocks 48,0,240 to 63,255,255), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
    Level time: 2315662 game time, 11718 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: creative (ID 1). Hardcore: false. Cheats: false
    Forced entities: 58 total; [EntityBat['Bat'/128, l='MpServer', x=374.43, y=18.07, z=-3676.75], EntityBat['Bat'/129, l='MpServer', x=378.96, y=37.00, z=-3671.25], EntityBat['Bat'/130, l='MpServer', x=381.25, y=24.82, z=-3705.89], EntityBat['Bat'/131, l='MpServer', x=372.75, y=30.22, z=-3689.71], EntitySquid['Squid'/143, l='MpServer', x=389.08, y=56.78, z=-3688.94], EntitySquid['Squid'/144, l='MpServer', x=391.84, y=59.47, z=-3690.33], EntitySquid['Squid'/145, l='MpServer', x=388.60, y=57.36, z=-3680.40], BuilderEntityExisting['entity.mts_entity.name'/18, l='MpServer', x=417.00, y=116.16, z=-3675.00], EntityBat['Bat'/146, l='MpServer', x=412.49, y=39.00, z=-3608.03], EntityPlayerSP['ChiefCarter3749'/17, l='MpServer', x=418.52, y=116.00, z=-3675.64], EntityBat['Bat'/147, l='MpServer', x=390.06, y=48.15, z=-3644.50], EntityPig['Pig'/160, l='MpServer', x=424.32, y=107.00, z=-3681.47], EntityCow['Cow'/161, l='MpServer', x=440.54, y=75.00, z=-3730.50], EntityCow['Cow'/162, l='MpServer', x=438.56, y=77.00, z=-3729.51], EntityBat['Bat'/163, l='MpServer', x=438.52, y=46.02, z=-3746.75], EntityCow['Cow'/170, l='MpServer', x=437.96, y=84.00, z=-3724.26], EntityCow['Cow'/171, l='MpServer', x=440.51, y=83.00, z=-3724.83], EntityBat['Bat'/174, l='MpServer', x=444.38, y=24.52, z=-3638.42], EntityBat['Bat'/175, l='MpServer', x=456.79, y=23.43, z=-3666.51], EntityItem['item.item.flint'/176, l='MpServer', x=456.23, y=88.00, z=-3652.65], EntityItem['item.item.leggingsDiamond'/177, l='MpServer', x=452.76, y=95.00, z=-3655.30], EntityItem['item.item.helmetDiamond'/178, l='MpServer', x=451.07, y=90.00, z=-3654.01], EntityItem['item.item.mts.wrench'/179, l='MpServer', x=451.45, y=97.00, z=-3657.46], EntityItem['item.item.bootsDiamond'/180, l='MpServer', x=463.88, y=96.00, z=-3654.59], EntityItem['item.item.chestplateDiamond'/181, l='MpServer', x=456.79, y=104.00, z=-3659.41], EntityItem['item.item.potion'/182, l='MpServer', x=441.32, y=68.00, z=-3654.01], EntityItem['item.tile.stonebrick'/183, l='MpServer', x=440.03, y=81.00, z=-3661.43], EntityPig['Pig'/184, l='MpServer', x=456.31, y=106.00, z=-3669.49], EntityItem['item.item.mtsofficialpack.comanche_blue'/185, l='MpServer', x=451.56, y=105.00, z=-3664.07], EntityPig['Pig'/186, l='MpServer', x=452.64, y=106.00, z=-3671.48], EntityPig['Pig'/187, l='MpServer', x=453.72, y=99.00, z=-3688.77], EntityBat['Bat'/188, l='MpServer', x=476.44, y=32.10, z=-3734.25], EntityBat['Bat'/191, l='MpServer', x=471.33, y=19.68, z=-3640.25], EntityItem['item.item.mts.partscanner'/192, l='MpServer', x=456.21, y=67.00, z=-3647.47], EntityPig['Pig'/216, l='MpServer', x=497.51, y=89.00, z=-3709.34], EntityPig['Pig'/220, l='MpServer', x=492.74, y=96.00, z=-3698.81], EntityPig['Pig'/221, l='MpServer', x=498.12, y=88.00, z=-3712.32], EntityPig['Pig'/224, l='MpServer', x=492.50, y=87.00, z=-3719.32], EntityPig['Pig'/225, l='MpServer', x=481.52, y=91.00, z=-3718.30], EntityBat['Bat'/100, l='MpServer', x=348.48, y=21.70, z=-3649.95], EntityBat['Bat'/101, l='MpServer', x=340.71, y=39.93, z=-3656.42], EntityBat['Bat'/102, l='MpServer', x=355.50, y=52.83, z=-3655.23], BuilderEntityRenderForwarder['entity.mts_entity_renderer.name'/615, l='MpServer', x=417.73, y=117.01, z=-3675.59], BuilderEntityExisting['entity.mts_entity.name'/616, l='MpServer', x=418.52, y=116.00, z=-3675.64], EntityBat['Bat'/238, l='MpServer', x=488.50, y=15.00, z=-3642.98], EntityBat['Bat'/239, l='MpServer', x=491.69, y=61.28, z=-3647.08], EntityPig['Pig'/240, l='MpServer', x=496.70, y=79.00, z=-3661.23], EntityPig['Pig'/241, l='MpServer', x=496.48, y=79.00, z=-3656.74], EntityPig['Pig'/243, l='MpServer', x=490.56, y=78.00, z=-3649.25], EntityItem['item.item.seeds'/117, l='MpServer', x=364.12, y=73.00, z=-3734.38], EntityItem['item.item.seeds'/118, l='MpServer', x=366.66, y=73.00, z=-3735.27], EntityItem['item.item.seeds'/119, l='MpServer', x=365.82, y=73.00, z=-3731.70], EntityBat['Bat'/120, l='MpServer', x=352.20, y=33.29, z=-3735.77], EntitySheep['Sheep'/121, l='MpServer', x=339.21, y=70.00, z=-3738.43], EntityBat['Bat'/122, l='MpServer', x=360.75, y=22.10, z=-3625.75], EntityBat['Bat'/123, l='MpServer', x=393.82, y=38.65, z=-3646.99], EntityBat['Bat'/124, l='MpServer', x=381.52, y=41.91, z=-3642.58], EntityBat['Bat'/127, l='MpServer', x=375.68, y=19.10, z=-3674.75]]
    Retry entities: 0 total; []
    Server brand: fml,forge
    Server type: Integrated singleplayer server
Stacktrace:
    at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:420)
    at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2741)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:419)
    at net.minecraft.client.main.Main.main(SourceFile:123)
    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:498)
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
    Minecraft Version: 1.12.2
    Operating System: Mac OS X (x86_64) version 10.16
    Java Version: 1.8.0_74, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 1029795240 bytes (982 MB) / 3635412992 bytes (3467 MB) up to 3817865216 bytes (3641 MB)
    JVM Flags: 3 total; -Xmx4096m -Xms256m -XX:PermSize=256m
    IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
    FML: MCP 9.42 Powered by Forge 14.23.5.2855 28 mods loaded, 28 mods active
    States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

    | State  | ID               | Version               | Source                                                      | Signature                                |
    |:------ |:---------------- |:--------------------- |:----------------------------------------------------------- |:---------------------------------------- |
    | LCHIJA | minecraft        | 1.12.2                | minecraft.jar                                               | None                                     |
    | LCHIJA | mcp              | 9.42                  | minecraft.jar                                               | None                                     |
    | LCHIJA | FML              | 8.0.99.99             | forge-1.12.2-14.23.5.2855.jar                               | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | LCHIJA | forge            | 14.23.5.2855          | forge-1.12.2-14.23.5.2855.jar                               | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | LCHIJA | mts              | 20.3.0                | Immersive Vehicles-1.12.2-20.3.0.jar                        | None                                     |
    | LCHIJA | vkm59tbird       | 2                     | 1959_ford_thunderbird.jar                                   | None                                     |
    | LCHIJA | wolffsmod        | 2.2                   | [1.12.2]-Flan's-Mod-Vehicles-for-Custom-NPCs-2.2.jar        | None                                     |
    | LCHIJA | mtsaircooled     | 1.0.1                 | Air-Cooled Pack [MTS] 1.10.2-14.0.0-1.0.1.jar               | None                                     |
    | LCHIJA | customnpcs       | 1.12                  | CustomNPCs_1.12.2-(05Jul20).jar                             | None                                     |
    | LCHIJA | unuparts         | 4.4.2                 | UNU Parts Pack [MTS] 1.12.2-20.1.0-4.4.2.jar                | None                                     |
    | LCHIJA | unuverse         | 1.3.0                 | Expanded UNUverse Pack [MTS] 1.12.2-18.0.0-1.3.0.jar        | None                                     |
    | LCHIJA | flansmod         | 5.10.0                | Flan's Mod-1.12.2-5.10.0.jar                                | None                                     |
    | LCHIJA | cfm              | 6.3.1                 | furniture-6.3.1-1.12.2.jar                                  | None                                     |
    | LCHIJA | gamcp            | 2                     | GAMCP_PreV2_1.12.2.jar                                      | None                                     |
    | LCHIJA | helicopterpack   | 2.7.0                 | Helicopter_Pack-2.7.0.jar                                   | None                                     |
    | LCHIJA | iav              | rob-grindes-shrug.png | IAV_Parts_Pack_Beta_3.jar                                   | None                                     |
    | LCHIJA | iv_timp          | 1.0.0                 | IV_Trin_Industrial_Machinery_Pack_1.0.3.jar                 | None                                     |
    | LCHIJA | ivv              | 1.5.0                 | IV_Vanity-1.5.jar                                           | None                                     |
    | LCHIJA | jei              | 4.16.1.301            | jei_1.12.2-4.16.1.301.jar                                   | None                                     |
    | LCHIJA | liquidspack      | 1.0.0                 | Liquid's-Vehicles-Pack-v2.2.jar                             | None                                     |
    | LCHIJA | mlvp             | 13.0.0                | Merlyn's Luxurious Vehicle Pack 5.4.6.jar                   | None                                     |
    | LCHIJA | mmmpack          | 1.1.0                 | Moonspire Metropolitan Motors [MTS] 1.10.2-15.5.0-1.1.0.jar | None                                     |
    | LCHIJA | kadwinjpvehicles | 2.0.0                 | MTS_Kadwin_JP_Vehicles_Pack_3.0.jar                         | None                                     |
    | LCHIJA | rcroads          | 0.3.0                 | RC Roads 0.3.0.jar                                          | None                                     |
    | LCHIJA | unucivil         | 4.2.5                 | UNU Civilian Pack [MTS] 1.12.2-19.15.5-4.2.5.jar            | None                                     |
    | LCHIJA | unumilitary      | 4.0.2                 | UNU Military Pack [MTS] 1.12.2-19.15.5-4.0.2.jar            | None                                     |
    | LCHIJA | vashkmat         | eh, who cares         | VASHKMAT 2.0.jar                                            | None                                     |
    | LCHIJA | worldedit        | 6.1.10                | worldedit-forge-mc1.12.2-6.1.10-dist.jar                    | None                                     |

    Loaded coremods (and transformers):
    GL info: ' Vendor: 'ATI Technologies Inc.' Version: '2.1 ATI-4.0.47' Renderer: 'AMD Radeon Pro 555X OpenGL Engine'
    Launched Version: forge-14.23.5.2855
    LWJGL: 2.9.2
    OpenGL: AMD Radeon Pro 555X OpenGL Engine GL version 2.1 ATI-4.0.47, ATI Technologies 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: Yes
    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)
    CPU: 12x Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz

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