Hi Michael,
Thanks for your quick reply. Yes I tested that, and also made sure that the game targets Win64, (In the game folder the exe is found under Binaries/Win64 folder), but still the same problem. It seems that it does not even try to compile my plugin as a static lib to be linked in the game.
Looking around the source code and binary distribution of UE4, I noticed that some of the engine plugins are compiled as dlls and static .lib as well. Is there a special option in the Build.cs file I need to use to get it to link in the game.
Thanks a lot for your help. Keep up the good work with such a brilliant engine