This is the crash info:

  Problem Event Name:    APPCRASH
  Application Name:    MovieMaker.exe
  Application Version:    16.4.3528.331
  Application Timestamp:    533a401b
  Fault Module Name:    StackHash_e8ad
  Fault Module Version:    0.0.0.0
  Fault Module Timestamp:    00000000
  Exception Code:    c0000005
  Exception Offset:    2a5705d3
  OS Version:    6.1.7601.2.1.0.256.48
  Locale ID:    1033
  Additional Information 1:    e8ad
  Additional Information 2:    e8adce1c2b9e7be834b4063ac3c53863
  Additional Information 3:    e8ad
  Additional Information 4:    e8adce1c2b9e7be834b4063ac3c53863

So everytime I open Movie Maker (Live Essentials 2012, Windows 7 64 bit) and I create a video with a picture and a wav file, when I save it as a WMV or MP4 video the thing crashes. It doesn't happen when I create a video out of a .MOV file, for instance.

Any suggestions?