Guys iv just installed fsx on my new tower, iv installed under C:FSX. However iv tried reinstalling my ngx but its saying my product activation key is void (not working). Do i have to buy the product again as ill need a new key???Thanks Danny.Here is my order number 168952

Check the date/time on your pc, inaccuracies can cause issues.If that doesn't work you'll need to open a support ticket. They'll get you fixed up