I have 2 Win7 installation which have the same update history (basically it's the update for mp3s etc.). Interstingly: the installation where this issue occurs has far less installed software that the other.

The way it looks it's either:
- a setting that I change and somehow it prevents MSI SQM from working
- some data files that are used by SQM got corrupted and now whenever it tries to start a session it crashes