Hi everyone, I do a lot of mapping and have run into a problem with the editor crashing. I'm asking this here because I see that you guys have a lot of mappers here and maybe someone could answer this.

I haven't had this issue with any of the maps that I've created but sometimes if I try to edit another, i.e. work with the lighting, every time I move or change a light the editor crashes. The 3D view goes black with only the grid showing and my mouse locks up. The only way out is ctrl alt del.

Any help would be greatly appreciated.