The full scan stops at a flac/cue combination.

I have tried loads of different albums, all with the same result:
Scanning starts, gets past the cue file, starts scanning the flac, CPU from the scanner.exe goes to 100% for about 90 seconds, then the scan reports that it has finished, while the time keeps on ticking. The problem is reproducable.

The status shown is:
  Directory Scan   (2  of  6)   Running  00:03:57
  C:\full\path\to\my.flac
  SqueezeCenter has finished scanning your music collection.
  Total Time: 00:03:57
  Abort scan: Clear library and rescan everything 

The log file shows:
  main::main (228) Error: Failed when running main scan: [usage: $io->seek(POS, WHENCE) at /<C:\PROGRA~1\SQUEEZ~1\server\scanner.exe>Slim/Formats/Playlists.pm line 99]
  main::main (229) Error: Skipping post-process & Not updating lastRescanTime!

For this test there were three folders in my music directory, each with a cue and a flac file.
The flac files have no embedded artwork.
Neither the tags nor the filenames contain non-ascii characters.

I get the above behaviour with 7.2.0, 7.2.1-23384 and 7.3-23393.
The same flac files were no problem for 6.5.4, 7.0.1 and 7.1.
(I have now downgraded to 7.1 and the scan works with these files.)