Help. Yum StopIteration error

[Chris Mohler]

> funny thing, now rpm -qa shows nothing.

That sounds bad - I found this:
http://fedoranews.org/alex/tutorial/rpm/16.shtml

Be *sure* to include the underscores in the first command presented.
I would write it this way:
 rm /var/lib/rpm/__* -f
With the -f on the end.  If you leave out those underscores, you
*will* be re-installing afterward!!!

If and when rpm -qa returns the correct info, try typing 'python' on
the CLI and see what version you have(or if it's working).  But if you
don't have RPM working, yum is going to fail...

Good luck!
Chris