I have received this error a few times in FSX. I never examined the environment of its occurance. This time I was changing from mininum terrain detail to maximum.Regards,Dick Boleyhttp://forums.avsim.net/user_files/165029.jpg

I did a Google search using "runtime error R6025" as keywords and came up with several recommendations. Norton Antivirus program was at fault in one thread. One individual fixed the problem by uninstalling and reinstalling the video card drivers. Another uninstalled/reinstalled the sound card drivers and the error went away. One individual had a really old software program on his hard drive and that turned out to be the cause of the error msg. If you recently installed FS9 aircraft or FS9 scenery into FSX, that could be your problem and you should remove or disable the aircraft/scenery, as appropriate, and see if that fixes your problem. Hope this helps.Best regards,Jim