Very well made! I works very well for me! Maybe you can put a window saying it's successful swapped and another window to that prevent user to swap correct tik files (I mean warning that the legit ticket comes first). Good job! @Lacius It's very strange, both DLC tickets needs to be in the same tik file. Did you backup your tik file? You can try use the @marc_max application to swap, it's a few posts above this one.