Factual error: In the scene where Chaplin and his wife are traveling to Europe by ship (when they find out Hoover has expelled him from the U.S.), the film shows the French Liner "Normandie" as it is leaving New York. The date shown on the film says September 1952. The "Normandie" however, was destroyed by fire in New York Harbor on February 9, 1942 as it was being converted into a U.S. troop ship for World War II. Incidentally, they filmed the scene on the R.M.S. Queen Mary in Long Beach, California, which in reality is probably the ship that the Chaplins actually took to Europe.
Continuity mistake: During the scene where Chaplin's brother is negotiating a deal for him, Chaplin and the secretary are having a conversation. During this conversation each of their tables has flowers on them. However, each time there is a close camera shot over their table the flower disappears and then reappears over and over. (00:46:40 - 00:47:55)
Continuity mistake: Near the end, when the elderly Chaplin and his biographer are seated on the terrace, chatting about madness, Chaplin's hands are clasped high up on his chest, clutching the shawl around his shoulders. In several subsequent shots, his hands are relaxed in his lap, then clasped again high on his chest, again and again, from shot to shot.