Problem with Groundhandling Deluxe and my IXEG B773

Hi

My Groundhandling Deluxe works very very well. Except when I want to fly with my IXEG B737. I have the set Boeing737-300Pu.set but Groundhandling does not work with this plane. I can also not call the "control panel" (no pop up). Nothing happens. The "Built Aircarft set" pop ups and I can work with them. But also after that I have no Groundhandling for this aircraft.

Very strange situation.

I hope that somebody can help me or give me a tip. 

I'm grateful for any help.

Regards

d'Hondt