I can usually work out my problems in time, but this has me puzzled. I thought I had deleted the underlying legs on this model, leaving trousers. When the foot is moved, the trousers hover at a weird angle and in fact cannot be weight painted. Also, the trousers vanish in edit mode but re-appear in object mode again. On rendering, the trousers appear again. Obviously I have done something to upset Blender, but what? Any help would be much appreciated.
Error.blend (481 KB)