I think I ran into a Simconnect problem when I first started with Jimi's v12.1, I think it was.
I only have FSX-SE, but it comes with 3 Simconnect versions included. I just installed all 3, or maybe one replaced the previous, I can't remember now. I installed them, IIRC in version order, IE, oldest version first, then the next and so on. Or maybe I looked for it on Flightsim forums, and used the number they specified. Or maybe it was here. I just can't remember that far back, drat it all. I'll look and see what I HAVE installed, and let you know. I suspect you have the wrong Simconnect installed, but if I am mistaken, I really hope someone will correct me.
I just got my wife a new PC, and we've been a bit busy getting everything installed and functioning, so my time has been a bit limited, of late...
I will do the best I can for ya, though.
Pat☺
EDIT: I just looked. I have v10.0.61259.0, and v10.0.62615.0 both installed. I don't know if that will help any...
Pat☺