Continuity mistake: At the beginning of the movie, Scott runs over to Fiona and kisses her. She says "Congratulations graduate" and is holding a jacket quite high whilst her arm is bent. In the next shot, her arm is straight and the jacket is down by her waist. (00:03:35)
Factual error: In "Amsterdam", before the characters go out, a famous Czech bridge is visible in the background.
Factual error: Amsterdam doesn't resemble the "real" Amsterdam at all, including the infamous Red Light District. When walking alongside the highway, it's clear that it's not a Dutch highway. The supposedly Dutch characters speak with an Eastern European accent, because the "Dutch" scenes were shot in Prague, the Czech Republic.
Continuity mistake: When the gang first arrives at the Vatican (as soon as the "map" shows them travel across the table to Italy), there is a very quick shot of them walking down an alley. Scotty says "there it is" and they walk toward a door with a sign above it (in English, for some reason) that says "Summer at Sea". The shot then changes and they are walking up to the Vatican guards. I guess there was supposed to be a scene where they went to the Summer at Sea office to find "Mike" but it was deleted. It wouldn't make sense, since they knew she was going to the Vatican anyway.
Continuity mistake: When Scott yells to Fiona that the leather jacket isn't his, the shot changes to Scott's father starting to walk over to Scott, and he's carrying a cloth in his hand. In the next shot the cloth has disappeared. (00:04:50)
Continuity mistake: When Scott asks the soccer hooligan where they are going (when they're on the bus), you can see that right at this moment the bus is about to pass underneath a bridge. The shot changes, but there isn't any visible indication that they passed underneath the bridge. (00:26:05)
Revealing mistake: When flashing to hitch a ride, black tape can be seen underneath Michelle Trachtenberg's top to preserve her dignity.
Continuity mistake: At the Vatican, when Scotty first sees Mieke, she has her hair in a ponytail, and her hair is straight. After the sex in the confessional, as she is leaving to catch her boat, her hair is curly.
Continuity mistake: The mail Scott writes when he is drunk is not the one Mieke receives. You can see exactly that Scott writes "freak", but the mail Mieke receives is full of typing errors. One of them spells freak as "fraek".
Other mistake: Right after the scene where they are chased by a bunch of naked guys at the nude beach, they're sitting in a train and we can see Scott leafing through his past e-mail correspondence with 'Mike'. If you look closely, you'll notice that the third page is the same as the first page.
Continuity mistake: The word "zussamen" which is shown close-up, when Scott reads an e-mail from Mieke after the graduation party, is not written in the e-mail that can be seen a few shots earlier.
Continuity mistake: When we first see Scott's computer, if you look to the left of it you can see the corner of a book very close to the computer (I am assuming it is the dictionary). In the next shot the desk next to the computer is empty and the dictionary is further over to the left. (00:05:35)
Continuity mistake: After Jaime introduces his Leica M7, he switches from swatting Scotty with his left hand to his right hand and back. (00:28:35)
Factual error: In addition to the error revealed before: The group approaches the Vatican Museums from the left, which is impossible because of the Vatican City Wall standing there.
Continuity mistake: In the scene where Cooper visits the Amsterdam pleasure house, he is given a safe word. When he is given this word, the woman directly on his left, the one in the pink sparkle shirt, you can see her breasts and not under her shirt. When she goes to strap his ankle to the metal structure in the next shot, her breasts are under her shirt. When she straps his wrist to the same structure two seconds later, her breasts are back out again.
Other mistake: When Scott is writing Mieke back for the first time, we see him typing on the keyboard, but no letters appear on the screen. (00:06:00)
Factual error: After the climax at the Vatican, before the main characters are seen sitting and having a drink, there is a brief shot from inside the "Galleria Vittorio Emanuel II", which is in Milan, not Rome.
Factual error: Near the end of the movie, when Mieka is shown in the Vatican, she is wearing a dress without any sleeves that does not cover all of her legs. This would never be allowed in the Vatican because of the dress code, which is long pants and long sleeves, and the same holds true for men's attire, such as shorts. (01:11:20)
Continuity mistake: When Scotty wakes up on the double-decker bus, his hair and the ribbons on the trophies aren't moving at all. In the next aerial shot they are all flapping in the wind.
Continuity mistake: When Scott and Cooper meet up with Jamie and Jenny in Paris, at the end of their conversation Jamie says "Let's go to the Louvre." When he says this his book is down by his side. In the next shot he has the book open in front of him. The shot changes again, and again the book is down by his side. (00:29:05)
Chosen answer: It was made for the movie but you can now find it all over the 'net. Try a Google search.