I have browsed some forums regarding this error you have and it seems that the drivers and the software is totally incompatible with the Windows 7 operating systems. No matter the way you try to install it will just show you the same error as "not being installed correctly". The approach to the problem using File compatibility is not working either. The only operating system where these drivers work correctly is Windows XP, plus modifying the INI and INF files would do no good.
You should periodically keep visiting manufacturer's page to check for newer updates of the drivers.