Why do I receive an error when I try to run my C# application that uses an assembly built by MATLAB Builder for .NET?

I have built an assembly using MATLAB Builder for .NET on a 32-bit machine. This assembly is being used by a C# application that is being built on a 64-bit machine. The application has the MATLAB Builder for .NET generated assembly referenced, and builds correctly. However, the following error is thrown at runtime:

 System.BadImageFormatException was unhandled

   Message="Could not load file or assembly 'MWArray, Version=2.0.0.0,

 Culture=neutral, PublicKeyToken=e1d84a0da19db86f' or one of its

 dependencies. An attempt was made to load a program with an incorrect

 format."

   Source="MatLabConsoleApplication"

   FileName="MWArray, Version=2.0.0.0, Culture=neutral,

 PublicKeyToken=e1d84a0da19db86f"

Answer 1

[MathWorks Support Team]

Components generated by the 32-bit builder products are not supported on 64-bit machines.

An assembly built using the MATLAB Builder for .NET on a 32-bit machine has a reference to a 32-bit MWArray assembly, which depends on the 32-bit native MCR libraries. As a result, this assembly should only be referenced in a 32-bit application. If referenced in a 64-bit application, the BadImageFormatException will be thrown by the application at runtime.