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.
Continuity mistake: At the beginning of Columbia's solo in "The Time Warp" she is sitting on the jukebox and wearing her gold glitter hat. Then, during the refrain, we see the hat on the floor near the jukebox, sans Columbia. Immediately after the refrain, Columbia has her hat back on as she does her tap dance. [There's about 9 seconds that Columbia's off-screen that she could have retrieved it, and about 4 seconds Magenta and Riff Raff are off-screen and end up next to Columbia and could have picked it up and given it to her, but there's no reason for it to have been out in the middle of the floor to begin with.] (00:22:10)
Continuity mistake: In the scene where Brad and Janet first talk with Frank in the lab (before Frank's speech beginning with 'Tonight, my unconventional conventionalists...'), Frank makes a comment about how Brad is "so dominant." At that moment, Brad closes his robe but does not button it. However, when the camera switches angles, it is buttoned. (00:31:33)
Continuity mistake: At the beginning when Brad and Janet get the flat tyre and it's raining, Brad says "Didn't we pass a castle back down the road a few miles?" before they get out of the car to go to the castle. If the castle was a few miles back, both of them should be soaking wet, and the paper Janet put over her head should have been soaked not long after they got out of the car. After they enter the driveway of the castle they get increasingly wet, but they are barely damp before this despite walking some distance in the constant rain. (00:13:25 - 00:14:25)
Continuity mistake: As Magenta is undressing Brad she throws Columbia his pullover - twice. (00:28:20)
Continuity mistake: During "Sweet Transvestite", Frank throws his cape off onto the throne. Part of the cape is over the left side of the back of the throne and the front of the left arm of the throne is not covered at all. There's a cut to Brad & Janet, then when it cuts back to Frank the cape is evenly draped over both arms of the throne covering them all the way to the floor with none on the back. (00:25:15)Myridon
Continuity mistake: When Brad, Dr. Scott, and Janet are turned into stone, their clothes fall to the ground. Dr. Scott's and Janet's clothes turn to stone, but Brad's remain cloth. When Columbia and Rocky are turned to stone, Columbia's clothes completely disappear (there is nothing around her feet when they are shown a few shots later). We never get to see if Rocky's are cloth, stone or nothing. (01:12:30)