Question : Visual Basic .net 2008 desktop app crashes on startup on Windows 7 64 Bit

My program runs fine on Windows 7 systems I have tested, but all were 32 bit.
Someone with 64 bit version can not get it to run and gets this error.
Is there something I can do to make it work on W7 64bit?
Is there a known issue running programs on 64 bit OS?
This is a windforms app from VB.net 2008  3.5 framework

These are the details of the error

Description:
  Stopped working

Problem signature:
  Problem Event Name:      CLR20r3
  Problem Signature 01:      Psys.exe
  Problem Signature 02:      1.0.3621.24776
  Problem Signature 03:      4b1420f0
  Problem Signature 04:      Photo Sys
  Problem Signature 05:      1.0.3621.24776
  Problem Signature 06:      4b1420f0
  Problem Signature 07:      12
  Problem Signature 08:      e0
  Problem Signature 09:      System.InvalidOperationException
  OS Version:      6.1.7600.2.0.0.768.3
  Locale ID:      1033

Answer : Visual Basic .net 2008 desktop app crashes on startup on Windows 7 64 Bit

Go to Build >> Configuration Manager and Change the platform Any CPU to x86 by adding new CPU (x86), and build for x86.