Not sure what else I can try.  I have created a simple mission of 1 plane taking off and landing at the same field.   As soon as I click run mission I get a ahedmiss.exe has stopped working box.  I have reinstalled AH patch 3, and the high rez package.  I was getting this with another mission, deleted that and created a new one.  I have deleted the 2 mission related cfg files in the setting directory.
 Problem details:
  Problem signature:
  Problem Event Name:   APPCRASH
  Application Name:   ahedmiss.exe
  Application Version:   0.0.0.0
  Application Timestamp:   50070723
  Fault Module Name:   ahedmiss.exe
  Fault Module Version:   0.0.0.0
  Fault Module Timestamp:   50070723
  Exception Code:   c0000005
  Exception Offset:   000d4d26
  OS Version:   6.1.7601.2.1.0.768.3
  Locale ID:   1033
  Additional Information 1:   0a9e
  Additional Information 2:   0a9e372d3b4ad19135b953a78882e 789
  Additional Information 3:   0a9e
  Additional Information 4:   0a9e372d3b4ad19135b953a78882e 789