I know folks have had problems with this but its a first for me, I tried to have a flight today when a screen poped up saying this game needs online activation, so I re entered my pmdg activation code and it excepted it, I went on my way but noticed soon after wards that all my displays were black, so I restarted fsx selected my ngx and it prompted me again for an activation code, repeated the steps above with the same result, Its kind of annoying, is there a fix?

only fix is support ticket at PMDG website

Problem found, apparently my PC clock was set to January 2003, don't know why that happened, but Im sure it had something to do with my in laws kids messing around with my pc the other day while I was at work, changed it back and it works fine now, note to self, lock my pc when guests arrive.