@cassiel I also get the same problem with @MonsTTer, yes even though I myself was able to log in and play, the error still appears and gets very annoying
but according to my friend, ¿© addressing F (I also do not know that it's right or wrong),
although my own making .lua and .lub separate or come together in a single GRF still get the error
any solution? =============================================== damn, i got my own solution .. just to mention, when get these error - see in your (costum).grf or search 2dlayerdir_f.lua in ur first merge data folder - and rename it to .lub well thanks anyways for these awesome thread !