Very fun game, unfortunately with some programming errors

My kids (10,12,14 years) are all Harry Potter fans and they love the game. The characters are animated funny and affectionate, backgrounds and scenarios full of ideas, full of little extra punch, yet closely followed the literary original and at the movies.
Unlike the related Lego Star Wars and Lego Indiana Jones games, the player has a lot more possibilities, as it not only follow a set path, but can move freely throughout the Hogwards World.
5 stars would be well deserved, were it not for the quite frequent errors and crashes.
The first version, which we were given was quite playable at the beginning only in the 1-player mode and was withdrawn without objection from Amazon.
The second runs previously reasonably. The regular crashes are not too much drama as the game caches often automatically.
Very ugly, however, are sites that do not allow you to master due to programming errors, just because the dragon one despite invisibility cloak looks, and that is what would be the only way to get past.
Nevertheless, if you ask the guys: would you want to have the game again? If the answer is an indignant: "Of course, definitely!"