"Flight Simulator has detected potentially incompatible aircraft or softwareFile:GaugeSound.dllmsvcr71.dllDo you want to load this software? Click No to disable this softwareYES / NO "How do I fix ThisPitstop2

Looks like you might have to add a section called "OLDMODULES" (with square brackets instead of quotation marks) to your fs9.cfg file. Place it on top of the page. Then enter the names of the offending dll's like this:"OLDMODULES"GaugeSound.dll=1msvcr71.dll=1At your next start-up you shouldn't see the message again. To be on the safe side: back up your original fs9.cfg file first, so if the change buggers up more things than it solves, you can simply revert to the original cfg and undoubtedly one ot the other people here will come up with a better solution.Be well!Jaap Verduijn.

I did a search on this forum for "gaugesound.dll" and found 25 topics that may help you. Make sure the gaugesound.dll is in your main FS2004 folder and possibly in your windows/system32 folder and NOT in your Module folder. Hope this helps.Jim