OK, I have all the bits and pieces to assemble my first fairly complex Poser scene (and *finally* have my FTP working so I can upload stuff)... just one small problem. I was putting together the scenery and doing test renders when I noticed I wasn't getting any shadows. Help?

The room is part of Murgol's flat, the lights are a set of four spots at a scale height of about 30-odd feet, shining down and set to point at an invisible object just above ceiling height. I'm fairly sure all lights and objects are visible and have "cast shadows" set. Does anyone know what could be wrong?

FWIW, I'm using Poser 4.0.3 in Win98.