Every time I try to add a keyframe this message comes up:
---- Minecraft Crash Report ----
// Shall we play a game?
Time: 9/23/18 6:13 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$180/1547074559.run(Unknown Source)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalStateException: Packet "ServerPlayerPositionRotationPacket" not fully read.
	at com.github.steveice10.packetlib.tcp.TcpPacketCodec.decode(TcpPacketCodec.java:44)
	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 7 (amd64) version 6.1
	Java Version: 1.8.0_51, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 392030040 bytes (373 MB) / 805306368 bytes (768 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: 0, tallocated: 0
	FML: MCP 9.42 Powered by Forge 14.23.2.2654 13 mods loaded, 13 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-1.12.2-14.23.2.2654.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
	| UCHIJA | forge                   | 14.23.2.2654 | forge-1.12.2-14.23.2.2654.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
	| 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: 'ATI Technologies Inc.' Version: '4.5.13497 Compatibility Profile Context 23.20.793.0' Renderer: 'AMD Radeon (TM) R9 200 Series' 
I have 64x Windows 7, 1.12.2 Forge, 1.12.2 Replay mod.
I've looked at other forums like this, and they mention a entity_positions.json. I can't find that file anywhere.
This error occurs in every recording, and I realllllllly need this fixed asap! :/