Patzer

In Starship Mine (1993), it is established that trilithium is a waste product of warp engines. It very well could be a "nuclear inhibitor" and capable of being turned into a weapon since arms dealers were trying to steal some. Why, then, when Worf is briefing Riker on it, do they both act as if it is something they've never heard of?

Data's emotion chip was previously seen in Brothers (1990) and Descent, Part II (1993), but it looked and operated very differently then. Also in Raumschiff Enterprise: Das nächste Jahrhundert (1987), Data didn't want to use the chip because it might have changed his personality to the worse - there was never an indication that it could "overload his neural net", which seems to be his only concern now.

The joke of Geordi's that Data laughs at, which is established as having been told at some point in "Encounter at Farpoint", mentions the Ferengi, but first contact with that race didn't occur until The Last Outpost (1987), three episodes later.

Worf bends over twice when he uncovers Soran.

On Veridian III the clouds in the sky come and go between scenes.

Even if a collapse of a star could affect its gravity, this effect would propagate no faster than the speed of light, according to the theory of relativity. The same goes for all the other effects that are mentioned in the movie (e.g. increased radiation). And yet, according to Data, the destruction of the Amargosa star affected an entire sector (many light years across) in mere hours, instead of years.

At the beginning of the film, when the bottle of champagne is smashed against the new Enterprise during the launching ceremony, the liquid clearly is affected by gravity, even though the ship is supposed to be in space.

After Soran punches B'Etor, her lip bleeds and the blood is red. This is not an error. Except for Star Trek VI - Das unentdeckte Land (1991), where Klingon blood is bright pink, it's always red, so, at most, this goof belong to that movie, not this one.

Dr Crusher says to LaForge "Some myocardial degeneration. I've removed the nanoprobe, and I think you're going to be fine." This refers to a scene where LaForge is tortured by the insertion of a nanoprobe into his heart, which starts and stops it. However, this scene was cut from the movie, so Beverly's comment about a nanoprobe and Geordi's heart makes no sense to the viewer.

Just because something happened off-screen doesn't mean it didn't occur.

While Picard is fighting Soran on the planet, he is wearing a new-style uniform. But when he is next seen picking through the ruins of the Enterprise, he is wearing an old-style uniform.

Enough time has passed that Picard could have changed into one of the newer uniforms.

Numerous officers onboard the Enterprise are seen switching between the older TNG style uniforms and the newer DS9/Voyager style uniforms and back. It would appear that at this point in Starfleet history the style of uniform worn is up to the individual officer's tastes and whims, and no change between them can be positively identified as a goof.

When the Klingons are observing the display from Lt. Commander La Forge's compromised visor, the tactical display, and the comment from B'Etor is that the "Shield Modulation" is 257.4MHz. Some might see this as an error in that the number represents a frequency rather than a type of modulation, i.e. AM, FM, etc. This would be an incorrect interpretation. Clearly B'Etor is referring to the modulation setting, not the type.

Picard states in his captain's log entry that Dr. Crusher has examined Data and found his emotion chip has been fused to his neural network and cannot be removed. Data later requests that he be deactivated until Dr. Crusher can find a way to remove the chip. Beverly Crusher is a medical doctor, trained in the treatment of organic beings. As Data is an android, his maintenance is usually performed by members of the engineering division, most often Geordi (who is the one who installed the emotion chip earlier in the film). It does not make any sense why Dr. Crusher would suddenly become responsible for Data's care midway through a film that takes place seven years into Data's service aboard the Enterprise.

Perhaps protocol changed so that Dr. Crusher was given responsibility for the well-being of all of the members of the crew, including the androids.

As Worf climbs up the side of the 19th century ship, his right knee is red either from bleeding or from touching a part of the ship that may have been freshly painted. When he enters the bridge, the red color is missing.

The uniforms worn by Riker and LaForge don't fit. This is because they're using the same ones worn by cast members of Star Trek: Deep Space Nine (1993).

When Geordi and Data are looking at Data's emotion chip you can clearly see LeVar Burton's eyes through Geordi's visor. As he raises his eyebrow while emoting to Data's dialog, the lighting, which is more indirect and from above, filters down between his face and the visor back-lighting the visor and making his right eye visible. As he turns his head slightly you can also see his left eye, but not as clearly.

When Data and Geordi look at Data's emotion chip, which is supposedly suspended in a forcefield, the long close-up shows by the wobbling of the rotating chip that it is hanging from a string. The difference in motion is unmistakable.

Roads are visible in the background during the climatic fight sequence on Veridian III, which is supposed to be uninhabited.

On the Enterprise-B bridge, when the ship is hit and crewmen go flying, you can see one man go over the bridge railing backwards twice from different angles. When he lands the second time, the edge of a blue pad to cushion his fall pops up into the bottom of the shot.

At the beginning of Picard's fight with Soran on Veridian III, when Picard is seen as having the advantage on the steel bridge, you can see the shadow of a cameraman in the lower right corner.

The rock under which Picard crawls to avoid the force field and reach Soran is obviously made of plaster and other materials (especially noticeable in close up).

On the Enterprise-B, a science officer says "The Lakul is one of two ships transporting El-Aurian refugees to Earth." If people knew about El-Aurian refugees in the 23rd century, they should have also known about what made them refugees, i.e. they shouldn't have learned about the Borg only in the 24th century. No reason is given as to why all El-Aurians would hide this information for a century.

After Picard was beamed to Veridian III, the Enterprise crew didn't know his location, and had to scan the entire planet to find him. For this to have happened, Picard must have been beamed down using the Klingon transporter, otherwise his destination would have been in the Enterprise's computer. But when Picard is shown arriving to the planet, he is clearly in a white Federation-type beam, and not a Klingon red one (seen previously on the Amargosa station, for example).

The El-Aurian refugees rescued by the Enterprise-B are ostensibly fleeing from the Borg. Guinan mentions in Q Who (1989) (which first introduced the Borg) that she wasn't on her home world when the they attacked, yet she's among the survivors who are rescued. Furthermore, the Federation never knew of the Borg until "Q Who" which takes place in 2365: did no one between 2293 and 2365 ever ask these refugees what they were fleeing from?

In the battles against the Borg, the Enterprise-D crew were pioneers in shield modulation to try to avoid the Borg attacks. Yet in this film, neither the engineering nor tactical crew ever attempts to re-modulate the shields. Although Geordi LaForge may have been the one responsible for modulating the shields, and his visor would give away the frequency, he did not do so in the battles with the Borg; that was handled by Data.

During Worf's promotion ceremony to the rank of lieutenant commander, when Worf is tasked with retrieving the "badge of office" (a hat) from a hook suspended over the plank, Riker espouses his belief that, "He'll never make it. No one ever has." This heavily implies that this ceremony is a fairly standard practice for promotion to lieutenant commander. Data, an android with superior strength and coordination to any organic being, has already achieved this rank, and numerous other Starfleet officers of species physically superior to humans, such as Vulcans, have achieved the same or higher ranks. It is inconceivable that a Vulcan or an android would not be able to achieve the same feat.

On the Enterprise B, a reporter remarks to Captain Kirk that "this is the first Enterprise in 30 years without James T. Kirk in command". She obviously hasn't done her Starfleet homework. In Star Trek - Der Film (1979), which is set approximately three to five years after Raumschiff Enterprise (1966) ended, Captain Willard Decker was in command of the Enterprise, until Admiral Kirk took over during an emergency mission. And, a few years later, when Star Trek II - Der Zorn des Khan (1982) takes place, Captain Spock is in command of the Enterprise until, just like before, Admiral Kirk takes command during an emergency situation (the distress call from space station Regula I).

On the Enterprise-B, Ensign Sulu says that the starboard ship is collapsing. What we see on the screen is the ship exploding on our left, the port side of the ship.

One of the journalists refers to Chekov as "Captain", even though he wears the rank insignia of a Commander.

In stellar cartography, Data postulates that Soran cannot simply fly a ship into the Nexus ribbon because every ship that has ever come into contact with it has been destroyed or severely damaged. While the ships have been destroyed, their occupants are shown to have entered into the Nexus. There's no reason to believe that flying a ship into the ribbon would not result in the occupant(s) reaching the Nexus.

Jean-Luc Picard agrees with Counselor Troi's assessment that, once his brother Robert married and had a son, it was no longer Jean-Luc's duty to carry on the Picard family name. Robert was Jean-Luc's elder brother. By the same tradition that would motivate one to wish to "carry on the family name," that duty would fall first to the elder sibling, not the younger. It would only fall to the younger sibling if the elder were unable to produce children, through their death, infertility, or other obstacles.