title: Not a valid Win32 application
body: <p>I have a project I have built in Visual Studio 2010 on a Windows 7 machine. It compiles and runs without a problem.</p>
  
  <p>When I place the application on a XP machine with .NET 4 it does not run with the error "is not a valid Win32 application"</p>
  
  <p>I tried everything here with no luck:
  <a href="http://blogs.msdn.com/b/dsvc/archive/2009/06/19/troubleshooting-not-a-valid-win32-application-error-at-the-startup.aspx" rel="noreferrer">http://blogs.msdn.com/b/dsvc/archive/2009/06/19/troubleshooting-not-a-valid-win32-application-error-at-the-startup.aspx</a></p>
  
  <p>I have no idea what is wrong. Any ideas?</p>
  
  <p>Thanks</p>
  
  <p>FYI: bindump:</p>
  
  <pre><code> Microsoft (R) COFF/PE Dumper Version 10.00.30319.01
  Copyright (C) Microsoft Corporation.  All rights reserved.
  
  
  Dump of file TimeKeeper.exe
  
  PE signature found
  
  File Type: EXECUTABLE IMAGE
  
  FILE HEADER VALUES
              8664 machine (x64)
                 2 number of sections
          4D24EED9 time date stamp Thu Jan 06 09:21:13 2011
                 0 file pointer to symbol table
                 0 number of symbols
                F0 size of optional header
                22 characteristics
                     Executable
                     Application can handle large (&gt;2GB) addresses
  
  OPTIONAL HEADER VALUES
               20B magic # (PE32+)
              8.00 linker version
             92600 size of code
               600 size of initialized data
                 0 size of uninitialized data
                 0 entry point
              2000 base of code
            400000 image base (0000000000400000 to 0000000000497FFF)
              2000 section alignment
               200 file alignment
              4.00 operating system version
              0.00 image version
              4.00 subsystem version
                 0 Win32 version
             98000 size of image
               200 size of headers
                 0 checksum
                 2 subsystem (Windows GUI)
              8540 DLL characteristics
                     Dynamic base
                     NX compatible
                     No structured exception handler
                     Terminal Server Aware
            400000 size of stack reserve
              4000 size of stack commit
            100000 size of heap reserve
              2000 size of heap commit
                 0 loader flags
                10 number of directories
                 0 [       0] RVA [size] of Export Directory
                 0 [       0] RVA [size] of Import Directory
             96000 [     598] RVA [size] of Resource Directory
                 0 [       0] RVA [size] of Exception Directory
                 0 [       0] RVA [size] of Certificates Directory
                 0 [       0] RVA [size] of Base Relocation Directory
             94454 [      1C] RVA [size] of Debug Directory
                 0 [       0] RVA [size] of Architecture Directory
                 0 [       0] RVA [size] of Global Pointer Directory
                 0 [       0] RVA [size] of Thread Storage Directory
                 0 [       0] RVA [size] of Load Configuration Directory
                 0 [       0] RVA [size] of Bound Import Directory
                 0 [       0] RVA [size] of Import Address Table Directory
                 0 [       0] RVA [size] of Delay Import Directory
              2000 [      48] RVA [size] of COM Descriptor Directory
                 0 [       0] RVA [size] of Reserved Directory
  
  
  SECTION HEADER #1
     .text name
     924FE virtual size
      2000 virtual address (0000000000402000 to 00000000004944FD)
     92600 size of raw data
       200 file pointer to raw data (00000200 to 000927FF)
         0 file pointer to relocation table
         0 file pointer to line numbers
         0 number of relocations
         0 number of line numbers
  60000020 flags
           Code
           Execute Read
  
    Debug Directories
  
          Time Type       Size      RVA  Pointer
      -------- ------ -------- -------- --------
      4D24EED9 cv           8E 00094470    92670    Format: RSDS, {07D03CC8-7510-4698-B5EB-6DC50714B88D}, 3, C:\Users\Mitch\Documents\Timekeeper 24.12.2010\client\TimeKeeper 24-12-2010\TimeKeeper\obj\x86\Release\TimeKeeper.pdb
  
  SECTION HEADER #2
     .rsrc name
       598 virtual size
     96000 virtual address (0000000000496000 to 0000000000496597)
       600 size of raw data
     92800 file pointer to raw data (00092800 to 00092DFF)
         0 file pointer to relocation table
         0 file pointer to line numbers
         0 number of relocations
         0 number of line numbers
  40000040 flags
           Initialized Data
           Read Only
  
    Summary
  
          2000 .rsrc
         94000 .text
  </code></pre>