Which *.dll-files should lie in the FS9-folder? I get error-meesages when I start up FS9, and some of my gauges on the PMDG 737 NG does not function at all. All enginge-indicators are set on zero and does not respond to the throttle. So which *.dll-files should be placed in FS9 folder?

Dear Unsigned,The PMDG aircraft are just ONE of the aircraft that can be used within FS9.You need to add some lines into your 'FS9.cfg.These are (OLD MODULES)>>>> Replace these with square brackets<<< FSSound.dllHope this is of some help? Can't help you with the guages maybe you should consider a 'reinstall'.Dave T. .........On the lovely warm Devon Riviera and active 'FlightSim User's Group' member at http://www.flightsimgrpuk.free-online.co.uk/

Thanks for your thoughts, I have already tried a reinstall on the PMDG but that did not work. (Maybe you meant the FS9?) I think that my problems go back to when I was trying to clean up my FS9-folder. Moving some DLL-files too much I guess, and after that I got the trouble with the gauges in PMDG. Can you tell me which DLL-files that are originally placed in the FS9-folder? I may have moved some files over from the FS9modules-folder. I need to know which ones should be in the FS9-folder. What did you mean by typing Old Modules in FS9.bgl? Do you have to do that everytime one install add-ons to the FS9?

xia,Here's a "dir" I did of a fresh install of FS9 a while back. You should be able to determine what should be in the modules folder from this. Note that this dir was done before installing the 9.1 upgrade, so if you have the upgrade installed, your directory may be different.http://stcroix.globat.com/~cat-tamer.com/d...ds/fs9-frsh.zipWRT the {OLDMODULES} entry, I believe these are FS2002 modules that some aircraft still use. FSSound.dll is probably the most common from what I've seen. Adding the entry (as shown above in Dave's post) to the FS9.cfg simply stops the sim from alerting you when one of these (supposedly incompatible) .dlls get's called up by an aircraft, and allows the .dll to run and do it's thing.Jim