Replay Mod Forums

---- Minecraft Crash Report ----

WARNING: coremods are present:
LoadingPlugin (replaymod-1.12-2.0.0.jar)
Contact their authors BEFORE contacting forge

// Sorry :(

Time: 2/19/18 8:33 PM
Description: Failed to load entity tracker, pathing will be unavailable.

java.io.IOException: decoding
at com.replaymod.replaystudio.io.ReplayInputStream.readPacket(ReplayInputStream.java:142)
at com.replaymod.replaystudio.util.EntityPositionTracker.loadFromPacketData(EntityPositionTracker.java:128)
at com.replaymod.replaystudio.util.EntityPositionTracker.load(EntityPositionTracker.java:87)
at com.replaymod.simplepathing.gui.GuiPathing.lambda$startLoadingEntityTracker$6(GuiPathing.java:496)
at com.replaymod.simplepathing.gui.GuiPathing$$Lambda$150/2071177188.run(Unknown Source)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IndexOutOfBoundsException: readerIndex(17) + length(8) exceeds writerIndex(20): PooledUnsafeDirectByteBuf(ridx: 17, widx: 20, cap: 20)
at com.github.steveice10.netty.buffer.AbstractByteBuf.checkReadableBytes0(AbstractByteBuf.java:1413)
at com.github.steveice10.netty.buffer.AbstractByteBuf.readLong(AbstractByteBuf.java:792)
at com.github.steveice10.netty.buffer.AbstractByteBuf.readDouble(AbstractByteBuf.java:818)
at com.github.steveice10.packetlib.tcp.io.ByteBufNetInput.readDouble(ByteBufNetInput.java:96)
at com.github.steveice10.mc.protocol.packet.ingame.server.entity.player.ServerPlayerPositionRotationPacket.read(ServerPlayerPositionRotationPacket.java:71)
at com.github.steveice10.packetlib.tcp.TcpPacketCodec.decode(TcpPacketCodec.java:41)
at com.replaymod.replaystudio.studio.protocol.StudioCodec.decode(StudioCodec.java:42)
at com.replaymod.replaystudio.io.ReplayInputStream.readPacket(ReplayInputStream.java:140)
... 5 more

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

-- System Details --
Details:
Minecraft Version: 1.12.2
Operating System: Windows 8 (amd64) version 6.2
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 355799392 bytes (339 MB) / 1207959552 bytes (1152 MB) up to 4294967296 bytes (4096 MB)
JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx4G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
FML: MCP 9.42 Powered by Forge 14.23.1.2556 Optifine OptiFine_1.12.2_HD_U_C9 14 mods loaded, 14 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 |
|:------ |:----------------------- |:------------ |:----------------------------- |:---------------------------------------- |
| UCHIJA | minecraft | 1.12.2 | minecraft.jar | None |
| UCHIJA | mcp | 9.42 | minecraft.jar | None |
| UCHIJA | FML | 8.0.99.99 | forge-1.12.2-14.23.1.2556.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| UCHIJA | forge | 14.23.1.2556 | forge-1.12.2-14.23.1.2556.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| UCHIJA | mercurius_updater | 1.0 | MercuriusUpdater-1.12.2.jar | None |
| UCHIJA | replaymod-compat | 1.12-2.0.0 | replaymod-1.12-2.0.0.jar | None |
| UCHIJA | replaymod-render | 1.12-2.0.0 | replaymod-1.12-2.0.0.jar | None |
| UCHIJA | replaymod-replay | 1.12-2.0.0 | replaymod-1.12-2.0.0.jar | None |
| UCHIJA | replaymod | 1.12-2.0.0 | replaymod-1.12-2.0.0.jar | None |
| UCHIJA | replaymod-editor | 1.12-2.0.0 | replaymod-1.12-2.0.0.jar | None |
| UCHIJA | replaymod-extras | 1.12-2.0.0 | replaymod-1.12-2.0.0.jar | None |
| UCHIJA | replaymod-online | 1.12-2.0.0 | replaymod-1.12-2.0.0.jar | None |
| UCHIJA | replaymod-recording | 1.12-2.0.0 | replaymod-1.12-2.0.0.jar | None |
| UCHIJA | replaymod-simplepathing | 1.12-2.0.0 | replaymod-1.12-2.0.0.jar | None |

Loaded coremods (and transformers):
LoadingPlugin (replaymod-1.12-2.0.0.jar)

GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.6.0 NVIDIA 388.31' Renderer: 'GeForce 940M/PCIe/SSE2'
OptiFine Version: OptiFine_1.12.2_HD_U_C9
Render Distance Chunks: 8
Mipmaps: 4
Anisotropic Filtering: 1
Antialiasing: 0
Multitexture: false
Shaders: null
OpenGlVersion: 4.6.0 NVIDIA 388.31
OpenGlRenderer: GeForce 940M/PCIe/SSE2
OpenGlVendor: NVIDIA Corporation
CpuCount: 4

You're using the 1.12 version of the ReplayMod on 1.12.2 Minecraft. Those are not compatible.
Furthermore you're using an old version of the ReplayMod. Had you used the most recent one, it would have refused to load and prevented you from making that mistake in the first place.

But if I load the ReplayMod 2.1.0 on 1.12.2 I can't open my replays. Is there a solution to open it ?

The last paragraph of this post explains how to do that. It's for 1.12.1 though, so for 1.12.2 you'll have to change the number to "9", not "7".

Thanks for your help ! :D