Hi , fellowsafter running Fly! II for exactly 45 minutes it crashes with soundgoing on and a splash-screen appears :>Push: ATCgoal stack is full.>File: atcgoal.cpp>Line: 615When hitting the OK-Button , Desktop is visible.I applied latest patch (..240) , globe-update , P51d , no sceneryor other addons.System: MSI K4V L , Geforce 4 Ti 4200 , Direct X 9.0 , 512 DDR-Ram AMD Athlon XP 2400+Many thanks for helping me ! Guenther

Guenther,Are you using the default ATC? If not, you need to "turn it off" via some settings in the fly.ini file. If you are using it, it would indicate you may not be responding to an ATC query, so it may be sending the same message over and over again until the message que is full, causing a crash.To turn off the default ATC, set the following lines in the fly.ini as indicated:Under ATC section: showATCScrollingText=0Under Sound section: useATCSounds=0Under SIM section: useFactoryATC=0

:-) Randall ,think that fixed my problem.Many thanks ! Guenther

Glad to hear it!