i mean, my scenery works now as a Trmode just for 5 minuite, after 5 minuite the scenery becames black, and then on the Addn manager i got a massage "active but not installed in scenery libery".
I'm sorry, but that's not possible. If you have the "Not installed int the scenery library" message, it must be there right from the start, not just after the Trial mode ends.
As I've said in my past two messages, enable logging in the "Troubleshooting" page under the "GSX - Settings" menu, and post the content of your Couatl.LOG file under %APPDATA%\Virtuali that will be created after an FSX restart.
Also, are you SURE you are looking at JFK V2, and not JFK maybe ? Have you installed JFK V2 and looking at the JFK V2 entry in the Addon Manager ?