In the normal course of events, you shouldn't need to read this page.
There are three possibilities:
The oracle database is being maintained/updated/restored in some fashion and
the table you want is not available. In that case, wait a day, try again, and
if the error persists, please report it.
You could try looking at the
bugs log to see if the problem is mentioned there.
The table really isn't there. In that case, I've been upgrading things and some
stuff is out of sync. You'll need to mail me in that case: email@example.com.
You have tried to be too clever. In this case, either be a bit stupider or somewhat smarter...