I've tried to install the TestDriver tool as described in the Developer Library, but failed.

----------------------------------------
C:\Symbian\03323a_Symbian_OS_v8.1b\bin\TechView\epoc32\tools\TestDriver\bin>testdriver install
Traceback (most recent call last):
 File "<string>", line 7, in ?
 File "D:\pyDistribution\installer\iu.py", line 274, in importHook
 File "D:\pyDistribution\installer\iu.py", line 353, in doimport
 File "L:\testtools\testdriver\Host\Scripts\clParser.py", line 1, in ?
 File "D:\pyDistribution\installer\iu.py", line 274, in importHook
 File "D:\pyDistribution\installer\iu.py", line 353, in doimport
 File "L:\testtools\testdriver\Host\Scripts\config.py", line 498, in ?
 File "L:\testtools\testdriver\Host\Scripts\config.py", line 64, in __init__
 File "C:\Python22\lib\os.py", line 379, in __getitem__
KeyError: EPOCROOT
Traceback (most recent call last):
 File "<string>", line 498, in ?
 File "<string>", line 64, in __init__
 File "C:\Python22\lib\os.py", line 379, in __getitem__
KeyError: EPOCROOT
Traceback (most recent call last):
 File "<string>", line 176, in ?
 File "<string>", line 13, in __init__
AttributeError: 'module' object has no attribute 'gConfig'
Traceback (most recent call last):
 File "<string>", line 1, in ?
 File "D:\pyDistribution\installer\iu.py", line 274, in importHook
 File "D:\pyDistribution\installer\iu.py", line 353, in doimport
 File "L:\testtools\testdriver\Host\Scripts\STATInterface.py", line 176, in ?
 File "L:\testtools\testdriver\Host\Scripts\STATInterface.py", line 13, in __init__
AttributeError: 'module' object has no attribute 'gConfig'
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I've not installed Python for Windows, as it is not required based on the library. But is it the reason?

Thanks.