MF6Plus setup ends with 0x80040706 error

[J_N]

I am trying to install MF6Plus on my XP, but during setup, I get this error

Unhandled exception, Error Number 0x80040706, Description: Object Reference Not Set.

On this page
http://consumer.installshield.com/kb.asp?id=q108322
is some solution , but only to version 11. Setup.exe on my cd is 12...

What's wrong?