I would try reinstalling the program. Make sure you save your runtime though!!!  After installing, don't just copy the whole runtime back, just the folders that contain your content.

Then install the patches. I think Poser 7 is up to SR2 now.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi