Continuity mistake: When Wolverine brings his jeep to a screeching halt, the windshield either changes color or appears out of thin air. (00:07:34)
Other mistake: When Wolverine first enters the subway, there are two tracks, and there is a train moving away from the camera on the track closest to the platform. When Gambit and Jubilee enter the same area moments later, there is now a train on the same set of tracks, but moving towards the camera. (00:07:38 - 00:08:07)
Continuity mistake: When Gambit and Jubilee are chasing after Wolverine, Gambit's gloves, pants and headgear alternate between being blue, black or a combination thereof depending on the shot. (00:07:55)
Continuity mistake: When Professor Oyama is telling Dr. Cornelius to begin the adamantium feed, Wolverine is reflected incorrectly in Oyama's glasses (note the device on Wolverine's left leg). (00:09:50)
Continuity mistake: When Professor Oyama says "Adjust the feed accordingly," you can see in the reflection of Wolverine in his glasses that the device that has been on Wolverine's left leg throughout the scene is missing. (00:10:20)
Continuity mistake: When Wolverine is trying to get to Professor Oyama, he slashes twice at the door leaving six claw marks. When the door is shown again after Wolverine is reacting to the explosion, there are suddenly several more claw marks without him ever slashing at the door again. (00:11:40)
Continuity mistake: The three tear marks in Wolverine's uniform from when Lady Deathstrike slashes him change position several times. When she first slashes him, the tear marks appear on his chest. Other shots show the tears to be closer to his abdomen. (00:13:50 - 00:16:00)
Continuity mistake: When Wolverine regains consciousness, he runs away and turns around, and there is a tunnel system directly behind him, and the alien craft on his right, almost within arm's reach. A few shots later, the alien craft has disappeared. When the shot changes again, the alien craft has reappeared. (00:17:45)
Continuity mistake: Wolverine first enters the sewers by ripping away a fence in the subway. When Jubilee and Gambit follow him, the fence is still intact. When they get closer it is torn again. Odd, really, because on the whole this show has few continuity errors, like self-mending clothes in other cartoons.
Continuity mistake: When Jubilee is saying "But the others," she is standing directly in front of Gambit. When the shot changes, she is no longer in front of Gambit. When the shot changes again, she is suddenly behind Gambit. (00:03:57)
Continuity mistake: When they first run away from the Spirit Drinker, Wolverine is kneeling down and cradling the unconscious Jubilee, with Gambit behind Wolverine, and Lady Deathstrike on Wolverine's left. When the shot changes, you can tell by the brown boots that Lady Deathstrike is now standing behind Wolverine instead of Gambit. (00:04:50)
Continuity mistake: When Wolverine says "Come on kid" to the unconscious Jubilee, the fingers of his left hand are flesh colored when they should be colored blue from wearing gloves. (00:04:50)
Continuity mistake: When Beast begins leaving the art museum, the painting behind him is a Picasso. When the shot changes, it is a different painting. (00:05:49)
Continuity mistake: When Gambit is saying "Now what do we do?" after throwing a kinetically charged card at the Spirit Drinker, the glove on his left hand is suddenly missing. (00:07:54)
Continuity mistake: When Jean tries to probe the Spirit Drinker's mind, she is standing several feet from the wall on her left. When Cyclops checks to see if she's all right, she is suddenly much closer to the wall. (00:12:07)
Revealing mistake: When Beast states that it appears safe to enter the alien ship, his right arm and right leg completely pass through Professor X's body and hover-chair respectively. (00:13:45)
Continuity mistake: When Beast and Xavier first enter the alien craft, Beast's black eyebrows are incorrectly colored blue for a couple of shots. (00:13:58)
Continuity mistake: The warning sign on the containment vessel inside the alien ship disappears in the wide shot. (00:14:40)
Continuity mistake: Gambit is missing his gloves when Jean Grey stops him, Wolverine and Cyclops to tell them what Professor X told her about the alien ship. (00:15:20)
Continuity mistake: Gambit's black cowl is suddenly blue when Jean Grey is explaining that the alien spacecraft is a prison ship. (00:15:25)
Answer: It appears a number of factors led to its demise. It was originally intended to air for 65 episodes, but its popularity extended that. However, there were continual production quality problems, issues regarding whether the content was suitable enough for children, as well as financial considerations that finally led to it being ended.
raywest ★