Hi Umberto,
Had some issues with my hard drive, so techs have 'cleaned' it. I suspect they made a mirror of it( I see a new program on my screen called Drive Image XML), removed every thing then did some work on the drive and replaced every thing. All programs seemed to work ok.
Anyway...When I started up FSX, It gave me warnings about a different machine when FSDT items were being loaded?, offered to check validity etc, and eventually came back ok for GSX and JFK2, but not happy with KLAX. Every time I loaded the key supplied with receipt, FSDT said it was not correct for KLAX v2... (JFK and KLAX were purchased together 12/29/2013.
So, I removed the version of KLAX that was loaded and re-downloaded KLAX from your site in case my original load was damaged some how, and then tried to re-apply the key supplied in receipt via cut and paste into the serial No field when I run addon manager. It again said the key was incorrect. When it give me the option to fill in a registration box, this box, despite what it says does not allow for cut and paste entries, and again manual entries are 'incorrect'
I must be doing some thing wrong?
Regards
Geoff