Materials, and Particle effects broken?

When ever i try to change a material, or add a particle effect, my unreal engine crashes. Is this something wrong with my computer? If so, is there a way i can fix it?

Sounds strange. Could you probably post your PC specs + the log file (documents - projectname - saved - logs- the file which gets generated after the crash) + report it on answerhub: https://answers.unrealengine/ :slight_smile: