Hi, sorry, I am away for PC until the end of the week. As for your error - I surely did not update anything, it’s caused by preexisting bug. What is wrong exactly - I can not say, but something is wrong with saved settings. Deleting the file in {User}/AppData/TilePipe/ will surely fix it (for Windows). You can delete everything there. I will try to fix the program next week. The problem is surely caused by missing texture for one of the tiles you made, I fixed something similar, but this bug got through.