In the toy store, boxes that Marcy has already knocked off the shelves appear back on the shelves later in the scene.
The second time Seth goes into the store he is wearing black pants but by the time he is in the middle of the store he is wearing khaki pants.
In the toy store, the corpse breathes.
The so-called Toronto Galleria is actually the Poughkeepsie Galleria in New York state's Hudson Valley.