When the surviving SuperFriends take refuge at the heavily guarded Marine base, initially Batman is shown standing with the others, yet he was supposedly deceased.
After Lex Luther crosses out an image of Batman on a chart that lists the other surviving Super Friends, the chart goes blank in the next scene. The following scene has the images of the Super Friends intact once more.
Revealing mistakes in more ways than one. When Superman's body is brought to the "heavily-guarded Marine base", Hawkman appears in one frame without his pants (just his red trunks), and Green Lantern in a close-up frame without his shirt.
In an amazing zoning gaffe, the government somehow allowed an oil well to drill not only within a major metropolitan city, but also next door to the Hall of Justice.