Steps to reproduce:
- Download http://sourceforge.net/projects/twsynth/
- When installer ask for components, check "Timidity++ Driver"
- Somewhere in the end it will start rundll32 syssetup.dll,SetupInfObjectInstallAction timiditydrv.NT 32 ...
At this moment it will crash in syssetup!SetupInfObjectInstallActionW
See attached logs and a screenshot.