I am trying to install a Windows service using InstallUtil.exe and am getting the error message
System.BadImageFormatException: Could not load file or assembly '
{xxx.exe}' or one of its dependencies. An attempt was made to load a program with an incorrect format.
What gives?
EDIT: (Not by OP) Full message extracted from dup getting way more hits [for googleability]:
C:\Windows\Microsoft.NET\Framework64\v4.0.30319>InstallUtil.exe C:\xxx.exe Microsoft (R) .NET Framework Installation utility Version 4.0.30319.1 Copyright (c) Microsoft Corporation. All rights reserved.
Exception occurred while initializing the installation: System.BadImageFormatException: Could not load file or assembly 'file:///C:\xxx.exe' or one of its dependencies. An attempt was made to load a program with an incorrect format..
Make sure the newest Framework (the one you compiled your app with) is first in the PATH. That solved the problem for me. (Found on a forum)