The Flight Planner and Dynamic Weather injections are not available in DEMO mode. The demo allows you to download a weather file and inject it up to 8 times into your simulator.
I then tried the demo.just over 5Mb file with no textures and an incredibily simple interface. The first I heard of this weather engine was a discussion here in Avsim, so I followed up with some more research: various forums were indeed discussing it and the developer was active in just about all of them, answering questions and addressing any bugs or requests. Continuing with our series of "Meet the Developers", I would like to present a small chat I had with Bernd Podhradsky, lead developer of FS Global Real Weather, a new entrant in the Weather Generator arena for Flight Simulator, currently supporting FSX/P3D and FS9.