Thanks everyone.  I finally just reinstalled Poser and everything is working fine - for the time being.  I have yet to installSR2.1.  I'm still not sure it works or just messes things up.  Maybe I'll just have to suffer waiting for the preview to come back up after viewing a render.

I don't have an SSD drive, so that wasn't the problem.  Forgive my ignorance - I'm an editor,  not a computer guru - but how do I remove Poser .int?