The DS game is pretty terrible. It's just the Crystal Skull movie that is playable, and the rest of the movies, they give you crappy minigames to play instead of real levels. It's actually pathetic.
The game works fine in TTDS using the latest unofficial firmware. But you don't want to play it anyways, go download the first Lego Indy DS game if you MUST, but really, TRY to get the game on any other system if you can. It's 10x better that way.