Acrobat SDK Loading Plugin Error (VS2022)

I am trying to get one of the sample plugins working on Windows 11 using Visual Studio 2022. The BasicPlugin compiles OK, but when I copy the dll into the Acrobat plugins folder, the plugin fails to load. I made no modifications to the code.

Any suggestions as to what the issue could be or where I can look to see what the problem is?

Cheers

Pete