Hi,Something strange happened. I starts FS9 like usual and load my PMDG B737-600.I start all the systems on the overhead panel, but when returning to the main panel, everything seems dead, nothing works like if the power is down. Also the FMC is not working.And when you put on the instrument lights, overhead is lightened, but main panel is not.I uninstalled and reinstalled my PMDG, but no changes.All the standard aircraft are still working in FS9.Any solutions????Thx,Jo

Jo-Have you just upgraded FS to FS9.1? Have you installed any new addons?It sounds to me as thought FSUIPC.dll might have gotten wiped out, or replaced with a version that is older than 3.40....Go to:http://www.schiratti.com and follow the links to Pete Dowson and FSUIPC.Download the latest version, then open the ZIP file and find FSIUPC.DLL... Place this file in your FS/MODULES folder...Then you should see improvement.