Cuetools not seeing ALAC as ALAC

[NickJP]

I'm experimenting with using Cuetools to convert some CDs ripped in iTunes as Apple Lossless to a single FLAC file plus cue sheet, for playing gapless through a Chromecast Audio. I started with some Pink Floyd - DSoTM, The Final Cut, and CD2 of The Wall encode to FLAC no problem. However, CD1 of The Wall gives the error msg ".\1-01 In The Flesh.m4a: Expecting ALAC data format." The file is definitely ALAC - iTunes reports it as such - and I completely deleted the album from iTunes and re-ripped all tracks as lossless, but still had the same problem when trying to encode to FLAC. Any suggestions? Here's the screen shot of the file properties from iTunes: