MARTINI wrote on Nov 1^st, 2012 at 3:45am:

Markoz No, the AVG has not detected as virus, but all these files are in the folder D: FSX \ SimObjects \ Airplanes \ CS_B727-100panel, is this correct?

That's correct.
It doesn't make sense for why it's not working. :-/

Have you tried running FSX as an administrator? - (Start > Games > Right click on Microsoft Flight Simulator X and select "Run as administrator").