I Added a C++ Pack Into My UE5 blueprints game and it wont open.

I ended up adding a C++ third person pack to my Blueprints game and now when i try to open it it says that the project is missing or built with a different engine and it always fails to compile it.

Anyone got a fix?

Can you share the compilation errors? If you build the solution in Visual Studio you should be able to see them.