I can't download SP2 in FSX. After downloading it, I get a message that the the SP requires an English version of FSX, which I obviously have. I have the baseline FSX, no Gold or Deluxe, et al. Any takers on this one?
Read the 4 points they have with the "+" sign.
Do you have SP1 installed and is your install pristine as one of the points on this page asks.
That could be the problem.