hello guys, let me tell you a little bit what happening...after install the new gsx, when i open my p3d , it disappear.., i re-installed 3 times more to see if the problem goes way,..and nothing,..so i took off from my computer and the p3d works again,...and the old gsx i never had a problem. i have no problem with memory ,, so i need yourhelp folks, thanks . ha also i got from simmarket witch after the purchase we have to download on fsdream team web