ReplayMod 1.12-2.1.3 Crash Report

---- Minecraft Crash Report ----

WARNING: coremods are present:
  LoadingPlugin (replaymod-1.12-2.1.3.jar)
Contact their authors BEFORE contacting forge

// Why is it breaking :(

Time: 8/19/18 8:11 PM
Description: Failed to load entity tracker, pathing will be unavailable.

java.io.IOException: decoding
	at com.replaymod.replaystudio.io.ReplayInputStream.fillBuffer(ReplayInputStream.java:195)
	at com.replaymod.replaystudio.io.ReplayInputStream.readPacket(ReplayInputStream.java:146)
	at com.replaymod.replaystudio.util.EntityPositionTracker.loadFromPacketData(EntityPositionTracker.java:136)
	at com.replaymod.replaystudio.util.EntityPositionTracker.load(EntityPositionTracker.java:95)
	at com.replaymod.simplepathing.gui.GuiPathing.lambda$3(GuiPathing.java:502)
	at com.replaymod.simplepathing.gui.GuiPathing$$Lambda$151/1783989687.run(Unknown Source)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalArgumentException: Value -1 has no mapping for key class com.replaymod.lib.com.github.steveice10.mc.protocol.data.game.entity.type.MobType.
	at com.replaymod.lib.com.github.steveice10.mc.protocol.data.MagicValues.key(MagicValues.java:1074)
	at com.replaymod.lib.com.github.steveice10.mc.protocol.packet.ingame.server.entity.spawn.ServerSpawnMobPacket.read(ServerSpawnMobPacket.java:107)
	at com.replaymod.lib.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.fillBuffer(ReplayInputStream.java:191)
	... 6 more


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

-- System Details --
Details:
	Minecraft Version: 1.12
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_51, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 340870872 bytes (325 MB) / 1073741824 bytes (1024 MB) up to 1073741824 bytes (1024 MB)
	JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -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 9.40 Powered by Forge 14.21.1.2387 Optifine OptiFine_1.12_HD_U_C5 16 mods loaded, 16 mods active
	States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
	UCHIJA	minecraft{1.12} [Minecraft] (minecraft.jar)
	UCHIJA	mcp{9.19} [Minecraft Coder Pack] (minecraft.jar)
	UCHIJA	FML{8.0.99.99} [Forge Mod Loader] (forge-1.12-14.21.1.2387.jar)
	UCHIJA	forge{14.21.1.2387} [Minecraft Forge] (forge-1.12-14.21.1.2387.jar)
	UCHIJA	mercurius_updater{1.0} [mercurius_updater] (MercuriusUpdater-1.12.jar)
	UCHIJA	replaymod-compat{1.12-2.1.3} [Replay Mod - Compatibility] (replaymod-1.12-2.1.3.jar)
	UCHIJA	replaymod{1.12-2.1.3} [Replay Mod] (replaymod-1.12-2.1.3.jar)
	UCHIJA	replaymod-editor{1.12-2.1.3} [Replay Mod - Replay Editor] (replaymod-1.12-2.1.3.jar)
	UCHIJA	replaymod-extras{1.12-2.1.3} [Replay Mod - Extras] (replaymod-1.12-2.1.3.jar)
	UCHIJA	replaymod-online{1.12-2.1.3} [Replay Mod - Online] (replaymod-1.12-2.1.3.jar)
	UCHIJA	replaymod-recording{1.12-2.1.3} [Replay Mod - Recording] (replaymod-1.12-2.1.3.jar)
	UCHIJA	replaymod-render{1.12-2.1.3} [Replay Mod - Render] (replaymod-1.12-2.1.3.jar)
	UCHIJA	replaymod-replay{1.12-2.1.3} [Replay Mod - Replay] (replaymod-1.12-2.1.3.jar)
	UCHIJA	replaymod-simplepathing{1.12-2.1.3} [Replay Mod - Simple Pathing] (replaymod-1.12-2.1.3.jar)
	UCHIJA	ias{7.0.3} [In-Game Account Switcher] (InGameAccountSwitcher-Forge-1.12-7.0.3.jar)
	UCHIJA	worldedit{6.1.8} [WorldEdit] (worldedit-forge-mc1.12-6.1.8-dist.jar)
	Loaded coremods (and transformers):
LoadingPlugin (replaymod-1.12-2.1.3.jar)

	GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.6.0 NVIDIA 397.64' Renderer: 'GeForce GTX 950M/PCIe/SSE2'
	OptiFine Version: OptiFine_1.12_HD_U_C5
	Render Distance Chunks: 21
	Mipmaps: 4
	Anisotropic Filtering: 1
	Antialiasing: 0
	Multitexture: false
	Shaders: null
	OpenGlVersion: 4.6.0 NVIDIA 397.64
	OpenGlRenderer: GeForce GTX 950M/PCIe/SSE2
	OpenGlVendor: NVIDIA Corporation
	CpuCount: 8