This is a really weird bug, it (only?) happens when you start the game, open the Replay Viewer, load a replay and mess with keyframes Here is a video showing the bug and crash report: (Was in spectator mode, moving the time keyframe crashed the game) https://www.youtube.com/watch?v=2U9ms6Oymng http://pastebin.com/3taTzVYt (Tried not in spectator mode, moving the time keyframe crashed the game) https://www.youtube.com/watch?v=9-LQx-4ByNE (Tried adding more time and position keyframes seems to resolve the issue) https://www.youtube.com/watch?v=ztAe7OfWn48
Fixed in *-2.0.0-b4