FSUIPC4.2 is installed It will not happen all the time .New York airports. I use built in ATC and at t.o.d I have nothing set. When I am givin the runway and what level to intercept the localizer I then set nav freq. and coarse until I have bottom and left side needles then I hit APPR. I have also waited for right side needle before hitting APPR. botton but I just can not hook up. Other airports have worked somtimes It seems to be random?Captin Sim 757 fof FSX