For next week (3/3/79), it lists Al Stewart at #29 with "Song On the Road", "Lady" by the "Littel River Band" at #21, and the countdown ends with Rod Stewart's "Do Ya Thing I'm Sexy?"
Also it starts by reprinting a letter from Tom Rounds stating "We're installing a new feature in the AMERICAN TOP 40 format this week", referring to opening the show by replaying the previous week's top 3 songs. That actually happened the previous week (2/24/79) and it lists the artists with the top 3 from 2/17.
ETA: I just looked at it. They must have used up all their errors on the special because the only errors on the regular show cue sheet is the letter on the first page where every instance of "JcPenney" leaves off the second "E" (assuming the same person who typed out the cue sheet also typed out the letter through dictation).
At least one mistake on 7/25/81: #20 is "The Stroke" by Billy "Squire".
And while it's not technically an error, I've seldom seen "R E O Speedwagon" written anywhere else with a space between every capital letter, though some of their earlier albums had periods between those letters. AT40's 1981 cue sheets wrote the band's name that way; from 1982 on they used the more usual REO.