HRESULT: 0x80131040: The located assembly’s manifest definition does not match the assembly reference
This is a mismatch between assemblies: a DLL referenced from an assembly doesn’t have a method signature that’s expected. Clean the solution, rebuild everything, and try again. Also, be careful if this is a reference to something that’s in the GAC; it could be that something somewhere is pointing to an incorrect version. Make sure … Read more