Goofs

During Ludwig's hopping dance through town, when he goes from the Indian statue to the horse, a shadow of the camera crane is visible and moving on the brick wall behind him.

During Ludwig's hopping dance through town, when he gets to the workmen on the sidewalk, brown sandbags are on the ground, and two or three shovels are leaning against the wall as seen from overhead. In the next shot from ground level though, the sandbags are gone, and there is only one shovel, and it's different from the ones in the previous shot.

At the end of the quintet's performance at his mother's house, Richard approaches the stage twice.

During Lisa Bellmount's "I've Gotta Hear the Beat" number, she repeatedly claps her hands and snaps her fingers. The claps and snaps sound like bare hands clapping, but she is wearing gloves.

When Rick is showing Cindy around New York, a clip of the Sambacabana club from On the Town (1949) is reused with Ann Miller, Jules Munshin, Gene Kelly, Vera-Ellen, Frank Sinatra, and Betty Garrett in the background.

When people enter the jail building, they walk up a flight of steps to the cells. However, when the building is shown from the rear, Richard Livingston, in his cell on the ground floor, is face-to-face with someone standing outside talking to him.

During Ludwig's "hopping" dance, the County Dog Catcher opens the back of his truck and lets seven of the dogs run free. (He is holding one dog and another remains in the truck.) His action might be attributed to Ludwig dancing with him, except that the dog "releaser" opened the truck gate before Ludwig got there, plus he had no way to control the dogs to prevent their escape even if Ludwig had not happened by.