!Urgent! Particle Collision Disapears in Game

Hello,
In this scene, my particle will start but there is no response to the collision event in my particle system. It works fine in preview, however. It it had stopped working periodically as I have been working on this scene, but always started up again after a few lighting builds so I didn’t look into it Today, it hasn’t started working again at all. The collision on my table works. I feel it is an issue with the lighting? Right now the closest point light is moveable. My project is due at 8 am so any quick responses would be appreciated.

I have not found an answer to this issue, but for my scene, it seemed to work if I changed the event from a collision to a death, so collision is not involved. This only works for this scene however, since the blood pool and splash are at a set location.