Other mistake: When Rick and Ardeth Bay save Evie from the warehouse after Imhotep is resurrected, there are four mummies chasing them when they get on the double-decker bus. Rick shoots one of the mummies and "kills" it. He shoots another one in half and goes to the top of the bus to fight another one. The top portion of the mummy that got shot in half then fights Ardeth Bay. Evie kills the mummy that got shot in half and the top part of the bus gets torn off by the bridge and kills the mummy Rick is fighting. John stops the bus and they all sign with relief. Whatever happened to the fourth mummy chasing them? (00:43:20 - 00:46:40)
Suggested correction: I could've sworn that the fourth mummy went after some innocent bystanders in the background, and maybe one of the other mummies jumped to the other side with the mummy on the pillars before getting shot by Rick. I could be completely wrong.
This is one of those instances that even the director admitted was a mistake. There was an extra scene of the last mummy attacking the bus after it stopped, but it was cut for feeling out of place. In truth, it makes no sense why one of the mummies vanishes.
Or that Rick shot it when it was on the bus before the other one came down to attack him.
Other mistake: During the fight scene in Seti's throne room, several times Anck and Nefertiri magically switch places. For instance in the scene where they are fighting Anck appears in front of Nefertiri to hit her in the face followed by Nefertiri kicking her.
Other mistake: How would Alex know that Imhotep's water wall took out his parents? The matter of distance is debatable. But, the winding path that the dirigible took though the canyon, as well last the water wall, would block his vision.
Other mistake: Rick's son screams for him during the rescue from the pygmies and Imhotep, but how did Alex know his dad was running in to save him, if he thought they were killed by Imhotep during the river consuming the ship in midair?
Suggested correction: Maybe he was hoping his dad was still alive and called out in the hopes that he still was. After all, nobody saw the bodies and just assumed that they all died.
Other mistake: When they are flying the dirigible through the night you can cleary see that there is a repeated pattern in the stars.
