rhnreg_ks fails with exceptions.UnboundLocalError

Issue

• up2date --register does nothing.
• rhnreg_ks throws errors.

# rhnreg_ks --username your_username --password your_password
An error has occurred:
exceptions.UnboundLocalError

• /var/log/up2date shows below error.

up2date   File "/usr/sbin/rhnreg_ks", line 404, in ?
    main()
   File "/usr/sbin/rhnreg_ks", line 266, in main
    sourcesFile.writeUp2date()
   File "/usr/share/rhn/up2date_client/sourcesConfig.py", line 115, in writeUp2date
    lines.insert(firstUsedLine-1, "up2date default\n")