When people are running around in front of the disco in a panic, the same figures cross the screen several times.
Ray's hair color changes dramatically between shots right after he exits Ecto-1 when the group decides to split up.
Janine's eyes stay closed from blinking at the television, when it shakes from the shouting news reporter.
After Slimer wakes up Peter, the shot pans to Ray who has just put on his flight suit. However, he is not wearing his black undershirt.
When the ECTO-1 arrives on Queensboro Bridge, the license plate reads "ACTO-1".