Description of problem:

Attempting to complete the network config via gnome.   Clicking on 'Apply' after
making any changes results in exception error:  Illegal argument type for
built-in operation.

Version-Release number of selected component (if applicable):  AS2.1


How reproducible:

Very - happens on all four of my servers, no matter the network config change
attempted.


Steps to Reproduce:
1.  Open gnome main menu Programs/System/Network Configuration; or the Start
Here window to System/Network Configuration
2.  Change the hosts, DNS, etc. 
3.  Click on Apply.
    
Actual results:

The following exception error and no changes applied -

Traceback (innermost last):
  File "/usr/sbin/neat", line 1210, in ?
    gtk.mainloop()
  File "/usr/lib/python1.5/site-packages/gtk.py", line 2608, in mainloop
    _gtk.gtk_main()
  File "/usr/lib/python1.5/site-packages/libglade.py", line 28, in __call__
    ret = apply(self.func, a)
  File "/usr/sbin/neat", line 392, in on_applyButton_clicked
    self.save()
  File "/usr/sbin/neat", line 271, in save
    self.saveHardware()
  File "/usr/sbin/neat", line 283, in saveHardware
    hardwarelist.save()
  File "/usr/sbin/../share/redhat-config-network/netconfpkg/NCHardwareList.py",
line 276, in save
    modules.write()
  File "/usr/sbin/../share/redhat-config-network/netconfpkg/Conf.py", line 981,
in write
    self[key] = self.vars[key]
  File "/usr/sbin/../share/redhat-config-network/netconfpkg/Conf.py", line 936,
in __setitem__
    replace = key + ' ' + varname + ' ' + endofline
TypeError: illegal argument type for built-in operation

Local variables in innermost frame:
endofline: None
value: {'alias': None}
self: <netconfpkg.NCHardwareList.MyConfModules instance at 848b268>
varname: eth1
missing: 1
key: alias
place: 0
findexp: [       ]*alias[        ]+eth1[         ]+


Expected results:

Simply to make the config changes requested.

Additional info: