@beka You can count, count on yourself 
The problem turned out to be files with double extensions or names containing special characters not compatible with Windows encoding. For example such as:
Larga.FLAC.ttx
Larga.WAV.ttx
Bee.flac.accurip
Bee.flac.log
edit.FLAC.ttx
file.list.log
fingerprint.ffp.log
Folder.auCDtect.log
fooCD.tect.log
Wonder.edit.log
Sun.FLAC.log
…flac
Files in their names cannot contain special characters or strange characters from Cyrillic, Gothic, Norse, etc.