I have installed the DAIL mod, and made custom game. But i dont see the new masteries, i installed the big pack from nexus page with all content, and when entering the map it only says veteran so im not sure it actual works, since no new masteries are in the game.
This is the wrong thread for such things, and overall, would have been better asked within the main DAIL bugs thread within the help section.
This being said, make sure the .arz filename from within the database folder matches the folder itself. If it doesn’t, you will get that very problem which afflicts you. And make sure that whole folder is placed within the mods folder in the directory of Grim Dawn.