Plot hole: When the castle is about to blast off, Brad and Janet abandon Dr. Scott's wheelchair at the door of the castle and carry/drag him across the porch and down the steps. After the blast off, Brad, Janet, and Dr. Scott are on the grass and have been blown some distance apart from each other (in the UK version, there's another song where Brad and Janet crawl toward Dr. Scott so they are blown farther apart than shown in the US version). It seems extremely unlikely that the remains of Dr. Scott's wheelchair just happened to fly from the doorway to land directly under him during the blast. Brad and Janet can barely crawl so they didn't move him or it. (01:34:10)Myridon
Continuity mistake: When the color machine has been lowered and Frank has finished opening the spigots, there is a shot which shows his reflection in the monitor on the console where Riff Raff is turning the crank. In the reflection his hands are up in the air, waiting for the color machine to be lowered - which, of course, it already has. (00:35:50)
Continuity mistake: As Brad and Janet enter the ballroom at the beginning of "The Time Warp", a red carpet runs from the throne at the opposite end of the room, down the steps, and clear across the floor to the ballroom entrance. After the second verse, as Riff Raff and Magenta dance across the floor, the carpet stops short at the bottom of the steps. The full-length carpet reappears and disappears several times during this number. (00:21:30 - 00:22:15)
Revealing mistake: When Dr. Scott's wheelchair is being pulled by Frank-N-Furter's magnet, just after passing Magenta and Columbia, Dr. Scott soars up the next flight of stairs. Look between the cobwebby banister bars and you'll notice that the 'stairs' are actually a flat surface. (01:01:20)Super Grover
Visible crew/equipment: Just after Brad says, "I really love the skillful way you beat the other girls to the bride's bouquet," as 'Dammit Janet' begins, twice it cuts to a shot of the "church caretakers" standing idly in front of the doors. In these two shots their marks are visible at their feet; there are outlines on the ground around their shoes, which vanish in following shots. (00:07:50)Super Grover
Continuity mistake: After Frank-N-Furter makes his initial appearance, when he bumps into Janet on the way out, her necklace chain is under her large pink dress collar. Once Frank-N-Furter leaves, her chain is actually around her neck now, over the large collar, so Riff Raff can easily pull the dress down unhindered. (00:27:00 - 00:27:50)Super Grover
Continuity mistake: Towards the end where they are all in the pool singing, Dr. Scott is saying how he can't fall into his trap and pulls up his leg and you see the stocking. A few seconds later when they cut in with a faster beat, you see his leg fall to the ground. There is not a stocking on his leg. (01:24:16)
Continuity mistake: During "Hot Patootie", before Eddie drives up onto the ramp, there is a group shot of the Transylvanians dancing. Two of them disappear from one shot to another. The black guy and the Arab can be seen kicking out during the line up but when the camera changes to the wide shot of them all they are both gone.