I don't know why it was eventually cancelled, but it was in process of being compiled along with the (apparently) February 9, 1977 Nashville show into a live album at some point. I don't know how many shows on the tour were recorded.
Interesting thing to notice on this tape box is the text says Nashville & St Louis, but the dates below that are for 2.11.77 & 2.12.77 which would actually be the Hullman Center, Indiana State University, Terre Haute, Indiana on the 11th and Kiel Auditorium, St Louis, Missouri on the 12th. The box is labeled 'Reel 4', and from the songs it looks like it would be the last side of what would have probably been a double album:
There were 9,900 people in attendance at the St Louis show. Here's a newspaper clipping of some kids backstage after the show with Tony and Ozzy:
Here is a very brief mention in the June 18, 1977 Billboard about the live album being mixed at Relight Studio in Hilvarenbeek, Netherlands:
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