Replay Mod Forums

So, I was trying the replay mod on cosmicpvp.me, I tried to make a spectator keyframe in the head of my player and it gives me an error/crash report,
here's the error:
https://ghostbin.com/paste/xpfgo

I suspect this is the same issue as in that thread.
Here is the same special version of the mod for 1.8 (in that other thread it's for 1.8.9): https://i.johni0702.de/replaymod-1.8-2.0.0-2-g1a1e96c*.jar
Make sure to read through the other thread so you know how to use it.