I am creating a Designer application object. I have both r2 and V3 on this machine. When I use Designer.Application, it always creates a R2 instance. Is there a different identifier for V3, or is there a setting somewhere, where I can point the Designer.Application to the correct version.
You have to reference the proper library. In Tools + References, you’ll see version 11 and version 12. If you reference 11, you’ll establish an XI R2 instance. If you select 12, you’ll get a 3.x instance.