Recently had to reload the 600-900 series. Now I find that theNav/Strobe/Beacon lights will not come on. All other lights appear to be operating normally.Cycled the switches several times, still no joy.Suggestions would be appreciated.Cheers,Neil

Maybe check to see that the fx files were loaded when you did the reload. Will be located in C:Program FilesMicrosoft GamesFlight Simulator 9EffectsThe files are: fx_navred_pmdgfx_navgre_pmdgfx_beaconh_pmdgfx_strobe_pmdgCheers

Well I opted for a night flight. Logo light was on, nav lights were barely visable, as was the strobe. So, I guess they work, but you would have a hard time seeing them in daylight :(Neil

Try changeing the halo file in your texture folder. There are some to be found here at AVSIM.