I did actually send SM an email yesterday and hope to hear from them when they open. I strongly suspect this is something to do with my system, and I'm considering getting a new PC just for Poser and 3D and keeping the old one for everything else.

I've had Poser since right before 4 came out, and bugs, weirdness, and inexplicable events have always been part of my Poser experience, but this is beyond anything I've seen before. I guess I will just hang on till I hear from SM. Glad to hear your experiences with them have been good, it gives me hope, because right now this has just cost me an illustration job.

Thanks for your responses and my best wishes for a wonderful new year.