Firstly, this mod is amazing! Totally changed the way I play the game and opened up wonderful new opportunities for me, so a massive thank you for that! 
Unfortunately though I am (pretty consistently) running into an issue when using the ships, it seems as though everytime I load the game I get a single use of a ship, then after it has returned home it refuses to fly anywhere else and just keeps telling me "Cannot Launch as Fleet. At least one ship doesn't have enough fuel to reach the target". This appears regardless of if the ship is in a fleet or not, and seemingly ignoring the fact that the ship has a full fuel load (1500). The only thing it lets me do is "Return ship", which is does perfectly well, but I can't do anything else until I reload the game
Unfortunately though I am (pretty consistently) running into an issue when using the ships, it seems as though everytime I load the game I get a single use of a ship, then after it has returned home it refuses to fly anywhere else and just keeps telling me "Cannot Launch as Fleet. At least one ship doesn't have enough fuel to reach the target". This appears regardless of if the ship is in a fleet or not, and seemingly ignoring the fact that the ship has a full fuel load (1500). The only thing it lets me do is "Return ship", which is does perfectly well, but I can't do anything else until I reload the game