I know this happen before to someone here, but this time to me. Pls. let me know how to fix it.rgds to all.Cesar/Venezuela

Cesar,I think it has to do with starting to use the ATC but then ignoring it. It seems that there's a limit to how many unanswered requests fly! can handle. My recommendation would be to "readback" to the ATC so there are no open ends. Does it make sense?There are certain messages where Fly!'s ATC expects you to acknowledge and if you just tune to a different frequency, it doesn't seem to go away... Not sure how this exactly works since all of this is hard-coded.Good luck,Alejandro AmigorenaCheshire, CTFly! II Beta Team MemberAthlon XP 1800ABIT KR7A-RAID768Mb RAMMSI GeForce4 Ti4600 8xAGP 128MBSB Audigy GamerCH Flight Yoke USBCH Pro Pedals USB

Also, if you use some other ATC program, such as C4TO and leave the default ATC running, this will happen. In that case the default ATC needs to be disabled, as it will expect an answer when you tune the same frequencies and eventually overload the stack.

Noted and thank both for your advised.rgdsCesar