Have you been to the forums yet? It might be an issue with FBX importing or an export setting in blender. There may be a toggle for solid mesh or something similar to the way static meshes worked in UDK. I'm just getting started with UE4 so the forum is probably your best bet for help.
jalder
Jessica joined
Computer Tech Guru, Game Designer, Advanced Electronic Devices Consultant, Digital Artist, Everything Tech. Working on Let's Make Games.