Particle Emitter causes editor to crash

Hello. Whenever I try to view a particle emitter in the editor at any time it crashes. For example, if I double click on the p_explosion particle, it seems like it tries to load Cascade, but it then locks up my computer and the editor crashes. If I try to drag it onto the scene, that also causes a crash. Finally, if I try to spawn emitter in the scene using blueprint, it crashes.

[2014.09.09-00.49.09:547][771]LogWindows: === Critical error: ===
Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00000000

My log says: [2014.09.09-00.49.09:547][771]LogWindows: Rendering thread exception:
Fatal error!

This question is being closed as a duplicate of Particle Emitter causes editor to crash - FX - Epic Developer Community Forums