Glad you like the tracks, Hanimichal. I'm running 64-bit Windows 7, and AI Carriers works fine for me. I wish I knew what the trick was. I just installed Java from the Sun website and then installed AI Carriers. But there are many reports like yours, so clearly it's not always that simple.
I gather from his website that the author, Lamont Clark, got some negative feedback and withdrew from FS development. It's truly unfortunate; for naval aviation, his programs are irreplaceable. I hope he knows that.