Description of problem:
Unable to run PUP to upgrade OS and components

Version-Release number of selected component (if applicable):
$ uname -a
Linux 2.6.23.9-85.fc8 #1 SMP Fri Dec 7 15:49:36 EST 2007 x86_64 x86_64 x86_64
GNU/Linux

pirut-1.3.28-1.fc8.rpm

How reproducible:
Run process to upgrade to latest version of Fedora 8

Steps taken too Reproduce:
1. Initial run of PUP (As software upgrader), error occurs. Captured.
2. Reboot and rerun PUP (As software upgrader) and error re-occurs.
3. Run PUP (As Add/Remove Software) to remove Package Upgrader.  
4. When to Fedora site to retrieve latest version of PUP 
                                        (via upgrade sub-directory)
   a. Note system-config-printer-0.7.74.4-3.fc8 (dependent)

5. RPM --install to retore both pirut and system-config-printer (versions listed
above).

6.  Ran PUP (as software upgrader) and error re-occurs.

  
Actual results:
1.  After de-install and re-installing the packages, the error didn't go away.

Expected results:


Additional info:
Error occurs after Package updater lists available updates available.


Component: pirut
Summary: TBd280403a miscutils.py:287:splitFilename:TypeError: 'NoneType' object
is unsubscriptable

Traceback (most recent call last):
  File "/usr/sbin/pup", line 611, in <module>
    main()
  File "/usr/sbin/pup", line 607, in main
    pup.run()
  File "/usr/sbin/pup", line 447, in run
    self.doRefresh()
  File "/usr/sbin/pup", line 287, in doRefresh
    self.populateUpdates()
  File "/usr/sbin/pup", line 369, in populateUpdates
    % (rpmUtils.miscutils.splitFilename(srpm)[0],),
  File "/usr/lib/python2.5/site-packages/rpmUtils/miscutils.py", line 287, in
splitFilename
    if filename[-4:] == '.rpm':
TypeError: 'NoneType' object is unsubscriptable

Local variables in innermost frame:
filename: None