Hi,
thanks for your answer.
Yes, I do have couatl and and addon Manager in "complements".
After reinstalling Genf i think the problem is solved. The circular buildings are now in the center of the jetways.
The scenery.cfg may be has been . / messed by the new ORBX FtX central in its version n°2/ a bunch of buggs
Wish Fs Dreamteam the best