Unreal Engine Crashing

Hello there,
my UE is constantly crashing whenever I m trying to add a matinee to my project. the engine works for maximum 5 minutes then it automatically crashes. and pops up a message box. Moreover, even my Pc crashes with the light build.
My system configuration is
Alienware 17
CPU - Intel Core i7-4710MQ @2.50Ghz
GPU - Nvidia Geforce GTX 880M
RAM - 16 GB.

I will be waiting for your response.
Thank you.
Peace!