error on Vista Ultimate with SP1

[Gintaras]

And then QM does not start? Possibly QM fails to retrieve your My Documents folder path. Please run regedit (click Start, type "regedit" in the start search field, press Enter) and open key

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders

In the right you should see "Personal" in the list. What is its data?