Description of problem:

In the Advanced Boot Loader screen bring up the dialog box to edit the
drive order anaconda thinks your BIOS sees drives in.

You can select an empty row below the last drive and click on the
buttons to move it.  This produces the following traceback:

File
"/usr/src/build/452771-i386/install//usr/lib/anaconda/iw/driveorderwidget.py",
line 102, in arrowClicked
   drive = model.get_value(iter, 0)[5:]
TypeError: unsubscriptable object

This was tested on a machine with one hard drive.  I've noticed in
RHEL 3 U2 issues with actuall not being able to change the order of
drives in the dialog box but I haven't tested in RHEL4b1 as the above was.