When you start a 'New Game', you are assigned a table that indicates what kind of charms you can get. there are lots of tables available. capcom probably did this so that different players can get different charms.
Its a one-off thing, once you begin you can never change what table you were assigned. how can you, when it is internal and invisible to you.
now, in theory its should be all fine and dandy. regardless of what table you get assigned, it shouldn't matter... BUT it seems that there are tables that are buggy. "cursed" is just a fancy way of saying it.
basically these "cursed" tables have poor charm selections and some will not give you minerals (that you mine) needed to forge special armours and/or weapons.
so basically these "cursed" tables can handicap your playing experience and the only way to get around it is to start a 'New Game'. annoying when you have poured hundreds of hours in the game.