Fsbuild-2 Flight Planner

Hi all,

New here, but not to flight sim.

I recently bought the A2A Stratocruiser (Great add-on!) and tried to implement the ISG gauges, for easier long haul flights.
I did so quite well in other add-ons and all worked fine. I do manage to get the FMS working, but when I set the flight mode to AP (LNAV pressed) I get as far as the first waypoint. If I want the FMS to keep controling my route, I need to press LNAV again. same for each and every leg.

Anyone with A2A experience here? any ideas as to what I may be doing wrong?

Thanks,

Amon