Thanks Cool P,
Fortunately the problem corrected itself. I ran the 727 on a short flight and like magic, the 707 loaded up after that. It had been down for days. I did install the new FSUIPC 4.7 but doubt that would have caused this to happen. I was having major A/P with the 767 and the latest FSUIPC really makes the 767 run smooth. Thanks so much for your detailed note. I will keep it in a safe place if this ever happens again. Hope all is well.
BG