Hi,
This error message is given by Windows Installer when you have a failing custom action, or incorrectly configured.
To debug your installation and see exactly which custom action fails I recommend creating a
verbose log.
For example, on Windows 7 you could have problems with custom actions which require certain permissions to execute correctly. In this case the custom actions
should be set as "Deferred with no impersonation", this shall make them executed under the SYSTEM account, with full admin rights.
Regards,
Bogdan