For Dragon Dance I use Jconfig and you need to delete the sv folder (you can do it with a script/bat too) after exit from the game. For TP you might need to do the same on similar folder where that launcher saves the game files. With that the game launches good all the time, else it stops working after the first launch.
Since on exit the game gives you codes for the levels (004, 006...) you don't lose anything important anyway deleting that folder.