I have installed Seychelles 3.1. in p3d 4.5.
But I think something is wrong with the groundmarkings at FSIA.
I wanted to park my plane at gate number 5. There was a sign on the building with number 5, but according to the ground markings it was parking number 4. At parking number 4 there was no ground marking, but there was a sign on the building with number 4.
Parking number 6 had number 5 as groundmarking.