Taking the chance of this good offer from Captain Sim I bought the FS9 B757 200/300 /FS9 v.2.  but once installed I noticed a CTD just upon starting.
Infact the only way to operate this plane is by initiating MSFS with defaultCessna and then changing to  Cpt.SimB757 aircraft.

Anybody can help? Tks  in advc.