Minecraft launches invisible with replay mod

When I have replay mod for minecraft 1.8.9 installed, minecraft forge launches but I can not see the window. There's no icon in my taskbar, if I try to open the minecraft launcher and launch the game again, it says minecraft is already running in this directory. If I go to task manager I can see that java is running, and killing it results in the minecraft launcher appearing, saying minecraft crashed (as excpected).

However, this same setup has worked before. Also, if I remove the replay mod from my mods folder, or launch a vanilla version of minecraft, the game lauches normally. Any ideas?

 

I've tried:

Reinstalling Java, Minecraft, Replaymod, FFmpeg.

Restaring Minecraft and Windows

Launching the game multiple times

Launching the game without other mods

 

Thanks!