Disgaea 2: Dark Hero Days

[mr.chya]

What do you mean it doesn't register? Do you mean no message pops up saying the DLC is installed? if so that's I believe that's normal, just go over to the dimensional guide and if it's working there will be a new option called summoning experiments which is the DLC. Be warned though, I just tried a few of them and all but the first one required me to fight them... and they're all level 100... and I had just started a completely new game.

Also please note that the DLC files should be in a folder like ULUS10461 for the US version of the game. That entire folder and all of its content goes inside the GAME folder for it to work.

One final reason I can think of for why it might not work is because the region of the game and the region of the DLC are not the same. If that is the case you will need the DLC from the correct region for it to work. I hope this will help you.