Question:

Not a valid Win32 application.
Additional information:

Often this error message will be similar to the below error message.

C:\Program Files\myprogram\program.exe is not a valid Win32 application.
Cause:

This issue can be caused by any of the below possibilities.

1. File is corrupt, bad, or missing.
2. File is not designed for your version of Windows.
3. File is a virus, worm, or other malware file.
4. Hardware incompatibility.

Answer:

File is corrupt, bad, or missing

If the file or program you're attempting to run is corrupt or missing, Windows will be unable to execute the file properly and sometimes generate this error message.


More: http://www.computerhope.com/issues/ch000726.htm