Program crashes with BEX , StackHash_0a9e

I too have the same problem on both my machines with windows 7.

I does not occur with Windows XP.

Problem signature:
  Problem Event Name:    BEX
  Application Name:    wlmail.exe
  Application Version:    16.4.3528.331
  Application Timestamp:    533a3fce
  Fault Module Name:    StackHash_0a9e
  Fault Module Version:    0.0.0.0
  Fault Module Timestamp:    00000000
  Exception Offset:    098c3d60
  Exception Code:    c0000005
  Exception Data:    00000008
  OS Version:    6.1.7601.2.1.0.256.1
  Locale ID:    3081
  Additional Information 1:    0a9e
  Additional Information 2:    0a9e372d3b4ad19135b953a78882e789
  Additional Information 3:    0a9e
  Additional Information 4:    0a9e372d3b4ad19135b953a78882e789

I am desperate to fix this after more than a year as none of the proposed solutions on line make any difference and I have reinstalled clean as well as repaired the installations countless times. I have the latest framework updates also. I cannot delete my XP machine until I have a solution to this problem.

Thanks in advance.

Split from an unrelated thread