fairuse4wm (Vista): provide inoperability for windows media files has stopped working

Hi,

I'm having some problem on Windows Vista.

I've downloaded FairUse4WM 1.3 fix 2 and according to WMP I'm running 11.0.6000.6324.

When i used the mirakagi.exe it created black box keys which is an empty file.

When i got to use fairuse4wm it opens but when i try to recover keys it says "using IBX "indiv01.key" 11.0.6000.7000.
When i click start I'm told "provide inoperability for windows media files has stopped working" and it quits automatically.

I'm trying to DRM free Napster files and I'm using a Vista machine... What's gone wrong??