Continuity mistake: In the scene where the kangaroo has just been knocked down by the Jeep, Charlie gets out of the driver's door and it swings shut. In the next shot the driver's door is open again. (00:19:45)
Factual error: Near the end of the movie, in the scene on the cliff, Charlie, Jessie and Louis are saved from impending murder when Senior Sergeant Jimmy appears, flying up in a helicopter and announcing he is from Australian Police. There is no police department in Australia called "Australian Police" - police departments in Australia are named after the state they are based in. As they are apparently near Alice Springs, Jimmy should have yelled out that he was from "Northern Territory Police."
Continuity mistake: In the chase scene, when Charlie and Louis go through the termite mounds, you can see that they are fake. Watch really closely and you'll see them hit one that doesn't break it just bobs back and forth.
Continuity mistake: When Louis washes his face at the camel fountain, he splashes water on his face. In the next shot his face is bone dry.