Thanks for your answer!
I deinstalled this codecpack some time ago, so this couldn't be the fault.
When I start FaceTrackNoIR with WinDbg (MS debugging tool), the error appears after loading msvfw32.dll. But this file isn't missing. What is the next file faceAPI is loading after msvfw32.dll?
Maybe somebody can post the debug-logfile of a running faceAPI?