Continuity mistake: When the crew of the Enterprise - D is in the Holodeck after Picard has left, Riker is telling Geordi to set royals at stunsail at which time Geordie is looking through a telescope with his right eye. In the next shot when he questions Riker, he takes the telescope down from his left eye. (00:24:05)
Continuity mistake: Worf bends over twice when he uncovers Soran. (00:26:30)
Continuity mistake: When Picard first fights Soran on Viridian 3, there is not a single cloud in the sky. Though when Picard returns with Kirk to fight him again (at the exact same time courtesy of the Nexus), it appears to be a very overcast day. (01:19:45 - 01:39:45)
Continuity mistake: When Kirk and Soran are fighting on top of the launching structure, Soran falls down the side of the cliff but stops his fall by grabbing a rope hanging from the structure. A moment later the rope loosens and Soran drops fifty feet or so before the rope pulls taught and he stops again. But despite having just dropped fifty feet, he is back at the same place on the cliff before the rope loosened the first time. (01:42:40)
Continuity mistake: When Data is moving away pieces, looking for the lifesign and finds his cat, his lenses are not always in. There are times that his eyes are blue. (01:50:30)
Continuity mistake: Worf's sash disappears when he is knocked over his console.
Suggested correction: I rewatched this scene several times. The sash remains on him throughout the crash.
Continuity mistake: When Kirk goes to get the control pad, he slips down the broken catwalk. As he slides, you see his left leg bent under the right, and his foot at impossible angle. A second later, both legs are side by side.
Continuity mistake: The knot in the rope holding Soren is toward the end of the rope. The knot slips out of the bracing, and the end of the rope goes over the side, meaning there's no help for Soren. A moment later, impossibly, that same knot catches in the same spot of the bracing, saving him.
Continuity mistake: It's established in TNG that Geordi's VISOR can see the entire EM spectrum, which several episodes showed to be a chaotic, indecipherable, visual frenzy that Geordi admitted he had to train himself to be able to comprehend. In 'Generations', however, the hijacked feed from Geordi's VISOR is shown as perfectly normal vision that looks like what you'd see from any standard camera.
Suggested correction: Exactly, because that's what Soran did when he modified it. He adapted the VISOR so that it would transmit what Geordi was seeing in the visual spectrum without making him aware that the VISOR had been modified.
Continuity mistake: When Worf is climbing out of the water, his knees have red on them. Later on the bridge, his pants are clean.
Continuity mistake: The two parts of the catwalk seem to be a good six or seven feet apart, a good challenge. But as Kirk goes to jump, the gap then seems to be only three feet. Possible perception from the angles.
Continuity mistake: On the observatory, Data pops open a small panel on his arm to generate a magnetic field to open the hidden door. In the wide angle, his bared arm appears normal, too fast for the panel on his arm to close.
Continuity mistake: When first on the bridge, Chekov's hair is fuller than when he goes to the sickbay.