As the Ghostbusters are escaping the "Arm Pit" and face two brown terror dogs, each Ghostbuster is wearing his normal uniform (even though they have been wearing orange prison jumpsuits). The next shot correctly shows the boys wearing their orange jumpsuits. The same thing briefly happens again when they are all running toward the portal.
When Janine and Louis leave the site of Egon's kidnapping, they can briefly be seen wearing orange prison jumpsuits. Before they entered the building they were wearing their Ghostbusters' uniforms, those uniforms return as the pair walks toward Ecto-1.
The "no ghosts" patches on Louis and Janine's uniforms appear and disappear throughout the episode.
As the crew are escaping from the "Arm Pit," Louis and Janine's Ghostbusters uniforms briefly change into orange prison jumpsuits and then back into the uniforms in between shots.
When Janine and Louis are blasting a large pillar, Slimer moves behind it. But the animation cel of the pillar is missing from the shot until it begins to move.
When Ecto-1 arrives at the gateway to Ghost World, it's license plate reads "Ecid-1".
When Janine and Louis arrive at the location Egon was last seen, as Janine gets out of Ecto-1, the car's interior is missing and the background plate is visible through the door.
When Janine and Louis return to the Ghostbusters' jail cell, their hands appear to grab onto the metal bars, but stay behind them instead of grabbing them (cel layering mistake).
Janine and Louis arrive at the Ghost Prison on their own, but in one shot, the ghost clown from the previous scene is suddenly positioned in front of them, floating backwards as they walk forwards, but otherwise not moving at all.
When Slimer comes down the pole, the traps he is carrying are the wrong color: all yellow with black stripes.
After the Ghostbusters are shoved into their cell, Winston says "Nobody told us how long we're in for", but his mouth doesn't move. Instead, it is remains wide open for the entire shot.
When Janine says "We were gonna discuss the pay raise you promised", her lips don't match the words she's saying.