David44

I am quite new to FSX and now have the following message on my FSX start-up window. "The Dem4km.bgl file is damaged or missing. Please re-install Flight Simulator to restore or repair the file." Do I have to do a complete uninstall and a re-install to do this, or can I simply overwrite to the file to repair or replace the file? I like most have a bunch of addon scenery, aircraft and special effects that I do not want to lose if at all possible. I have done a complete search for this file but can't find it anywhere. Thanks for what ever input you other flight enthusiasts can offer.

Thanks so very much. I will investigate that fs sound.dll issue and let you know how it turns out.

This was a download package purchased from MAAM 2007. It has workrd flawlessly until the recently. Immediately after selecting any of the several versions included in the package the following message appears and my FS-9 will freeze until I close out the program with the "end Now ' button. This is a verbatum copy of the message" flight simulator was unable to load some aircraft or software.You can continue using FS but this aircraft will be disabled. File:Gauges\maam_RD4.Gau." I have deleted the RD4 DC-3 files from FS-9 and my aircraft files and have reloaded from the original MAAM download Zip 4 times and the message is still the same.Would it be someones guess there is a file that has gone missing or perhaps corrupted and at this point even the zip is no longer any good. Could the missing or corrupted file be found or repaired ? If I were to delete all files for MaaM RD4 DC3 from my computer and purchased a new download or DVD from MaaM could I restore this old bird to my stable of lod beauties that are older than I am.