Mistake 1
In Chapter 6 - Hermione says she have modified the memories of her parents.
"I've also modified my parents' memories so that they're convinced they're really called Wendell and Monica Wilkins."
But later - In Chapter 9 - She says she never done a memory charm.
"But I've never done a memory charm.'
'Nor have I,' said Hermione"
Mistake 2
Who was the Master of the Elder Wand?
One can be the Master of th Elder Wand only if he/she defeats the previous owner. If you do not defeat the previous owner, but tool the wand, it will be just a wand. It will not give you 'extraordinary magical powers'. The book clearly says this.
As the book says.
Gregorovitch owned the wand and Grindelwald took it from him. Dumbledore defeated Grindelwald and took the wand. Then Draco Malfoy unknowingly defeated Dumbledore (in the 'Lightning Struck Tower'). Harry defeats Draco at 'Malfoy Manor' and so Harry is the Master of the wand.
But the problem is Grindelwald never defeated Gregorovitch. He stole it from him. So he was never the master of the wand. So accordingly Dumbledore, Draco and Harry could not be the Master of the wand.
But Voldemort killed Gregorovitch in his quest for the Elder Wand. so he is the Master of the Elder Wand.
These are the Mistakes I could find. If anyone found some other mistakes or has any explanations for these please comment.
In Chapter 6 - Hermione says she have modified the memories of her parents.
"I've also modified my parents' memories so that they're convinced they're really called Wendell and Monica Wilkins."
But later - In Chapter 9 - She says she never done a memory charm.
"But I've never done a memory charm.'
'Nor have I,' said Hermione"
Mistake 2
Who was the Master of the Elder Wand?
One can be the Master of th Elder Wand only if he/she defeats the previous owner. If you do not defeat the previous owner, but tool the wand, it will be just a wand. It will not give you 'extraordinary magical powers'. The book clearly says this.
As the book says.
Gregorovitch owned the wand and Grindelwald took it from him. Dumbledore defeated Grindelwald and took the wand. Then Draco Malfoy unknowingly defeated Dumbledore (in the 'Lightning Struck Tower'). Harry defeats Draco at 'Malfoy Manor' and so Harry is the Master of the wand.
But the problem is Grindelwald never defeated Gregorovitch. He stole it from him. So he was never the master of the wand. So accordingly Dumbledore, Draco and Harry could not be the Master of the wand.
But Voldemort killed Gregorovitch in his quest for the Elder Wand. so he is the Master of the Elder Wand.
These are the Mistakes I could find. If anyone found some other mistakes or has any explanations for these please comment.



