Doesn't sound good.
You could try reapplying the latest service pack (won't hurt anything). If it is something within Poser itself, that should fix it.
It's also possible that the scene file got corrupted. Pretty hard to fix that, usually it's faster to rebuild the scene from scratch than trying to repair it using a text editor or CR2 editor.

The pen is mightier than the sword. But if you literally want to have some impact, use a typewriter

My gallery   My freestuff