Ok Umberto...I uninstall the GSX 1.8.1,download the live update,install the vehicles update and reset the GSX Airplane configuration and now everything it`s ok
,thanks for your help like always.
PD.I bought yesterday the KDFW and I notice something strange with the taxi lines and others little things,and I was going to ask for your help,but I read in the forum some topics and now I know it`s normal,so everything it`s ok them,GREAT scenery BTW.