Quicktime package - install fails - "a newer version is already installed..."

I can get the package with my custom mst file to install if i manually run it via command line. If i then add it to SCCM for deployment, which runs under the system account it thinks it has a newer version installed. if i run it under the user context from SCCM it also thinks there is a newer version installed. When building a brand new pc with only Windows 7, Office 2007, Media Player 12 and the latest flash player, it again thinks there is a newer version installed.

Why do I get this message in SCCM:
The program for advertisement "00220075" failed ("0020005D" - "Per-system unattended"). The failure description was "A newer version of QuickTime is already installed. This installation cannot proceed while the newer version of QuickTime is installed.".
User context: NT-MYNDIGHET\SYSTEM