Guess what??? I got the problem fixed! Turns out that we receive script files from a software vendor that can at any time modify the structure of our Oracle or SQL tables; well, our Administrator had received a script that had erased two fields in the offending table, and my SAS EG was looking at an old view of the table. After we did some heavy-duty reviewing of the table, we figured which fields were causing the probelm, removed them from the old view, did a refresh, and now can see and use the table.
I asked our administrator how he knows what the scripts do and his response was that he didn't know what impact the scripts had, that he just runs them. Sound like the old "just following orders," doesn't it?
Thanks for your replies and for your suggestions....it's nice to know there are folks willing to help others out there.