Summary
EXCEPTION VIOLATION crash in a standalone game when animating Mover using the Sequencer Anim Mixer plugin
What Type of Bug are you experiencing?
Animation
Steps to Reproduce
In GASP, turn on Sequencer Anim Mixer plugin. Give an animation to the SandboxCharacter_Mover character (that isn’t possessed, but I haven’t tried a possessed version) in a sequencer and play it at BeginPlay in a Standalone game (doesn’t replicate in viewport). Causes EXCEPTION VIOLATION crashes as soon as the animation starts.
Expected Result
If this is a known limitation of the plugin/mover, I would have appreciated knowing about it before spending a day trying to find why my game is crashing 
Observed Result
EXCEPTION VIOLATION crash
Affects Versions
5.7
Platform(s)
Windows