Other mistake: When Greg is looking at the video of Rowley sitting on the foil ball, he notices it has only 4 views on YouTube. However, if you look closely, it has 24,963 comments - impossible if it's only been viewed 4 times.
Upvote valid corrections to help move entries into the corrections section.
Suggested correction: YouTube is broken. This kind of thing actually does happen in real life quite frequently. In fact, a video I was just watching had that problem.
Other mistake: After Greg gets beaten up by the party girls, it cuts to a page in the book where Rodrick is giving Greg and Rowley drum lessons. Although the doodle Rowley is smiling in this shot, he is actually frowning in the book.
