Hi RPENNER1
I'm not with Laminar Research, just a fellow simmer in the UK, but it appears to me that the G1000 was first made available in the X-Plane 11.10 update.
With that in mind, unless someone else can advise further, it does not appear that X-Plane 10 is able to support the G1000.
You may therefore wish to consider updating your version of X-Plane accordingly?
Regards