It may have problem when u use old version of SDK. Try to use newer version of SDK:
There is a folder in this directory: Nokia\Tools\Python_for_Series_60\py2sis..........
Try to unzip Python_1_1_5_for_2ndEd_FP1_SDK.exe. The are two folders. One is called "InstallderData".
1. Find Resouce1 in this directory "InstallerData\Disk1\InstData\\Resource1.zip"
2. Unizip Resource1.zip
3. find py2sis.zip from
4. Unzip py2sis.zip and copy to this diretory "Nokia\Tools\Python_for_Series_60\"
Then u can use it.........Good luck