HiI'm not sure if RadarContact has something to do with it - I always use RadarContact(4)...Once in a while I have a CTD with the error message that the module atc.dll was the cause of the CTD. Now I am not sure what to do about it. Is it Radar Contact related, is it soemthing else. It happens so far around London and San Francisco. But not always...Any suggestions welcome.thxMartin

In FS9 this can be caused by not using FS ATC traffic control and using another. I'm not sure about FSX.Back up your FSUIPC.ini file in your modules folder to another folder. Edit the original in the modules folder to add under the General section the following statement:RemoveATC=YesThis disabled FS ATC which has a problem within a certain frequency queue comm frequencies repeating. Also for FS9 make sure you are running with the 9.1 version.See if that helps.

HiI'm not sure if RadarContact has something to do with it - I always use RadarContact(4)...Once in a while I have a CTD with the error message that the module atc.dll was the cause of the CTD. Now I am not sure what to do about it. Is it Radar Contact related, is it soemthing else. It happens so far around London and San Francisco. But not always...Any suggestions welcome.thxMartin

In FS9 this can be caused by not using FS ATC traffic control and using another. I'm not sure about FSX.Back up your FSUIPC.ini file in your modules folder to another folder. Edit the original in the modules folder to add under the General section the following statement:RemoveATC=YesThis disabled FS ATC which has a problem within a certain frequency queue comm frequencies repeating. Also for FS9 make sure you are running with the 9.1 version.See if that helps.

thank you ronziethis sounds like a good advice. I will give it it try tomorrow.Martin

thank you ronziethis sounds like a good advice. I will give it it try tomorrow.Martin

Martin, did it the trick?