seandst

Tried a clean and repair, but it didn't fix the problem. A full reinstall would probably fix it, but ugh so many gigs. And no, the TF-51D (and Su-25T) are not separate modules; as far as I can tell they should be part of WORLD. https://forums.eagle.ru/showpost.php?p=2548018&postcount=4 For fun, I did try to just install a module named "TF-51D" anyway, but the updater had no idea what that was.

I have the same or similar issue. In my case, the game is telling me that I don't have the TF-51D module installed/activated. Given that the module is built in to the game (right?), I'm not entirely sure how this is possible: I'm not sure if you're seeing the same problem, but check the bottom left pane in the server browser, under where it says "Required" to see if that's what's happening for you, too.