“An attempt was made to load a program with an incorrect format” even when the platforms are the same

Question

I\'m calling functions from a 32-bit unmanaged DLL on a 64-bit system. What I get is:

BadImageFormatException: An attempt was made to load a program w

Answer 1

In my case it was wrong content of the file. DLL was downloaded from the web, but content of the DLL was HTML page :D Try to check if it is binary file, if it seems like correct DLL :)