Redhat Linux 6.1 Hard Disk Installation Problem

[Allix Primus <alleve idirect com>]

I've had many problems installing Linux distributions from my hard drive. Most
of them give me errors that I can't get past or just don't seem to work. I am
having the same problem with Redhat 6.1. After downloading the 642 megabyte
file I was pretty angry to get this error when it tries to read all the
packages : 

File
"/tmp/lib/python1.5/site-packages/comps.py", line 50, in __init__ 
	name = h[rpm.RPMTAG_NAME]
Type Error : unsubscriptable object

Is it just my computer , or has anyone else experienced this problem with the
hard disk installation of Redhat 6.1.