Hi Hugo.

As I said here:

Markoz wrote on Feb 11^th, 2012 at 2:06am:

If FSX is installed in the default location (C:\Program Files\Microsoft Games\Microsoft Flight Simulator X or C:\Program Files (x86)\Microsoft Games\Microsoft Flight Simulator X) and you are using Vista or Win7, you might also need to run FSX (fsx.exe file) as an administrator every time you use FSX. It is highly recommended NOT to install FSX in the default location on Vista or Win7.

So it is possible that you need to run FSX as an administrator as well.

Mark