Hi all,I have been running FS9 for months now with no problems. Now I get a CTD when changing options on the menu (mainly fuel and payload). I have not been tweaking anything but do have the following:PMDG 737 6/7/8/900RFP 747 classicAeroworx KingairFlight1 Archerand Radar Contact (although it has crashed when this has not been running)And some simflyers sceneryHardware wise: AMD Athlon 2800XP with Radeon 9500, memory is 512mbDDR PC2100,some generic stuff...Anyone got any suggestions, things to check? I have asked for an error report, and the status box says that it compiles and sends the report, but I never see the results. Where can I check the results of the error report?CheersRici

Is this happening with all aircraft, or just select aircraft? One quick thing to try is to reset your FS9.cfg by renaming it to FS9.old. A new one will be built. If that doesn't fix the problem, you can restore your old .cfg file...-John

It happens with all aircraft, but last night it happened repeatedly with the 747. Ill try your suggestion. Thanks for your help!