Missing textures/doesn't work...

I have just installed the NGX onto my system. I ran all the re distributables after the installation and read the NGX introduction notes. Basically, it doesn't work. Textures are missing, none of the clickspots work and there is always a 5 second pause (black screen) between the 'free flight' loading screen and the game its self. Hope you guys can help :) EDIT: Apparently FSX asks you to activate the NGX when you first start it up- I haven't been given this message.