C++/cli dll

Hi, I’m writing a DLL in C++/CLI and try to call it from a C# node within GH.
I set the .NET version to 4.0 but the below error pops up.
Is there anything I can take a look at?
Thank you!

Is your mixed mode dll 32 or 64 bit?

Hi David, thanks for the reply. Yes, I found I was compiling the code with 32bit settings. Now it is loaded properly with 64bit settings.