Other mistake: After the avalanche when the yetis are pulling the people out of the snow the first person they pull out is by a house or shrine, as they pull them out look closely at the wall right behind them--the "snow" flips up like paper.
Other mistake: When Rick and Evy are fighting the clay mummies, Rick yells, "Shut up, clay boy!" before he hits the mummy with a machine gun. In the very next shot, he is holding a pistol - an entirely different gun, as it never shows Rick dropping the machine gun and pulling out a pistol.
Other mistake: When the avalanche is over and the Yeti are digging out our heroes, they are conveniently less than four feet from the surface of the snow, despite the fact that millions of tons of snow has just landed on them.
Suggested correction: First of all, they're not buried in "less than four feet" of snow. Judging by how far they have to be lifted, they all seem to be about 4-6 feet from the surface. And second, according to the Baker Mountain Guides website (they specialize in mountaineering, rock-climbing and skiing, so they're a good source), this is pretty much 100% accurate. The average burial depth of an avalanche is around 1.3 meters... that's about 4 feet. Sure, you could get buried in more (or less)... but the fact is, the movie is within an objectively, factually accurate range, so this cannot logically be considered a valid mistake.
Other mistake: In the final scene, watch the drummer in the band. He's not making any contact with the drums and is just miming it. Ex. He stops his drumstick about 2" above the cymbal every time he's supposed to hit it, even though you can hear a cymbal in the soundtrack. It's most noticeable when the brand briefly goes into focus as the camera passes between Alex/Lin and Rick/Evie. (He was probably told not to actually drum so the dialogue wouldn't be ruined).
